Database Users

Marshmallow-Oneplus2- Help section

Kindly share everything about marshmallow here.

http://downloads.oneplus.net/2016-03-30/op2/OnePlus_2_OxygenOS_3.0_Beta/ got official marshmallow.
cheers!

Marshmallow is great.

Trafalgar Square said:
Marshmallow is great.
Click to expand...
Click to collapse
have u flashed it? share the video how exactly u flashed.

Follow this instruction to get marshmallow
Download the files required, ROM, RECOVERY, SUPERSU.
1) Goto recovery mode (obviously twrp recovery).
2) Clear (dalvic, system, data, cache) and not (internal).
3) Flash the ROM, then flash the RECOVERY by selecting "install image" and selecting "recovery".
4) Go back to main page of TWRP & Reboot and when it asks (system, recovery, fastboot), choose recovery.
Then you just wait, it will reboot back to the new TWRP (orange color).
5) Now flash the ROM once again. But before flashing, must clear cache again like in step 2.
6) Clear cache.
7) Reboot now. it takes approx 1mins and shows new bootanimation.
Now, when you get Marshmallow page, set everything up like in starting. Then
8) Flash SuperSU file via recovery to get root access.

Stuck in Boot Animation

Hi!
I have a A2107G and unlocked it, coming from B04.
Everything worked so far, but I have messed around with bootstack/modem and now I am struggling.
I flashed a new ROM with TWRP (different versions) and the ROM (doesn't matter which one) is stuck in booting animation.
What can I do to bring it back to life?
Also another question: After switching on, directly after the ZTE logo coming up, a black sceen with some infos coming up and stay there for 5 secs.
Is there a way to get rid of this

Sui77 said:
Hi!
I have a A2107G and unlocked it, coming from B04.
Everything worked so far, but I have messed around with bootstack/modem and now I am struggling.
I flashed a new ROM with TWRP (different versions) and the ROM (doesn't matter which one) is stuck in booting animation.
What can I do to bring it back to life?
Also another question: After switching on, directly after the ZTE logo coming up, a black sceen with some infos coming up and stay there for 5 secs.
Is there a way to get rid of this
Click to expand...
Click to collapse
Do you have twrp? If yes, flash stock rom.

WesTD said:
Do you have twrp? If yes, flash stock rom.
Click to expand...
Click to collapse
Yes, I have TWRP.
So i should flash a stock image and start over from scratch (with rooting, ...)
Is the posted screen normal?

Sui77 said:
Yes, I have TWRP.
So i should flash a stock image and start over from scratch (with rooting, ...)
Is the posted screen normal?
Click to expand...
Click to collapse
Yes it is normal. It means you've unlocked bootloader.
Flash stock rom zip. There are some guides.

WesTD said:
Yes it is normal. It means you've unlocked bootloader.
Flash stock rom zip. There are some guides.
Click to expand...
Click to collapse
THX.
Will do so.
Which ROM do you prefer? CarbonRom? LOS?
How do i get the system partition r/w?
I think I screwed up the phone when i tried to make it writable?

Sui77 said:
THX.
Will do so.
Which ROM do you prefer? CarbonRom? LOS?
How do i get the system partition r/w?
I think I screwed up the phone when i tried to make it writable?
Click to expand...
Click to collapse
I use aosp bases.

Sui77 said:
THX.
Will do so.
Which ROM do you prefer? CarbonRom? LOS?
How do i get the system partition r/w?
I think I screwed up the phone when i tried to make it writable?
Click to expand...
Click to collapse
Heh. I don't know if there are flashable stock zips for the A2017G, the way I know of is flashing the stock recovery and using an official zip. But you shouldn't go back to stock if you want to use custom ROMs. Try this:
-Get an SD card, put
~ a custom ROM (RR, LOS,NucleaROM (i prefer NucleaROM, just sayin)),
~a Magisk 13.3 zip or SuperSU 2.82 zip,
~an OpenGApps zip (I use pico), arm64,
~a TWRP 3.1.1-0.img and
~A2017X Universal Bootloader and A2017G modem.
-Wipe system, data, cache and dalvik
-Install the Universal Bootloader, then the Modem, then the ROM and last the GApps and magisk/SuperSU
-If you had something important on the internal storage put it on the SD with the File manager under Advanced
-Go to Wipe -> Format data -> type Yes. This will get rid of the possible encryption from the stock ROM, but it will wipe your internal storage too.
-Reboot to system
You can use the 5 seconds screen to get to TWRP with the Volume buttons. Pretty handy I guess. There's a zip out there that gets rid of that screen, but you risk black-screening your phone with what seems to be no immediate fix (you'd be looking at an RMA)
So, after you use the phone and open TWRP again, you'll have an old version of it (3.0.1N-0 or sth). So go to Install, choose Install image, and select the TWRP 3.1.1-0.img on your SDcard. Then Reboot -> reboot to recovery and you can do whatever you want.

Choose an username... said:
Heh. I don't know if there are flashable stock zips for the A2017G, the way I know of is flashing the stock recovery and using an official zip. But you shouldn't go back to stock if you want to use custom ROMs. Try this:
-Get an SD card, put
~ a custom ROM (RR, LOS,NucleaROM (i prefer NucleaROM, just sayin)),
~a Magisk 13.3 zip or SuperSU 2.82 zip,
~an OpenGApps zip (I use pico), arm64,
~a TWRP 3.1.1-0.img and
~A2017X Universal Bootloader and A2017G modem.
-Wipe system, data, cache and dalvik
-Install the Universal Bootloader, then the Modem, then the ROM and last the GApps and magisk/SuperSU
-If you had something important on the internal storage put it on the SD with the File manager under Advanced
-Go to Wipe -> Format data -> type Yes. This will get rid of the possible encryption from the stock ROM, but it will wipe your internal storage too.
-Reboot to system
You can use the 5 seconds screen to get to TWRP with the Volume buttons. Pretty handy I guess. There's a zip out there that gets rid of that screen, but you risk black-screening your phone with what seems to be no immediate fix (you'd be looking at an RMA)
So, after you use the phone and open TWRP again, you'll have an old version of it (3.0.1N-0 or sth). So go to Install, choose Install image, and select the TWRP 3.1.1-0.img on your SDcard. Then Reboot -> reboot to recovery and you can do whatever you want.
Click to expand...
Click to collapse
Hi!
Thanks for your help and the time you spent on my problem.
I have tried all that stuff already, but maybe not in exact that order. Will try it this evening.
In case i will be able to bring it back to life, I have 2 questions, pls:
1: You mentioned the 5sec-screen and a zip to get rid of it.
Where could I find it (not seen yet) and how do i get into fastboot, when I skip this screen?
2: When I setted up my Axon with a Custom Rom and SU and everything was working as it should do, I was not able to write to /system (or deleting something in system/apps)
How do I get rid of this restriction? I think I have found an instruction once, but I failed and afterwards my device was stuck in animation.
orry for bothering, but the Axon really drive me nuts. Never had such a hassle with my Nexus

Sui77 said:
Hi!
Thanks for your help and the time you spent on my problem.
I have tried all that stuff already, but maybe not in exact that order. Will try it this evening.
In case i will be able to bring it back to life, I have 2 questions, pls:
1: You mentioned the 5sec-screen and a zip to get rid of it.
Where could I find it (not seen yet) and how do i get into fastboot, when I skip this screen?
2: When I setted up my Axon with a Custom Rom and SU and everything was working as it should do, I was not able to write to /system (or deleting something in system/apps)
How do I get rid of this restriction? I think I have found an instruction once, but I failed and afterwards my device was stuck in animation.
orry for bothering, but the Axon really drive me nuts. Never had such a hassle with my Nexus
Click to expand...
Click to collapse
Which file manager you are using?
I'm using Root Explorer and no problem. Be sure you allow to root permission

WesTD said:
Which file manager you are using?
I'm using Root Explorer and no problem. Be sure you allow to root permission
Click to expand...
Click to collapse
Also Root Explorer, root granted.

Sui77 said:
Also Root Explorer, root granted.
Click to expand...
Click to collapse
Can you just leave the 5 sec screen alone? You can kill your phone, and there doesn't seem to be anything you can do really.
If you're insistent, you can find it under Themes Apps and Mods, called "We remove the inscription that the bootloader is unlocked" made by NFound1.
And about the restriction to modify the system, connect your phone to a PC with ADB, fire up ADB and configure it (USB debugging, ADB over network if you have the option, permit the connection) and issue 'adb reboot disemmcwp' (disable emmc write protection, that is. Write it just like that or your phone will reboot and you will still have the protection active).
The phone has its difficulties and all but it's easy to work with once you get the hang of it. And, you know, your big cores don't just die all of a sudden, which is a good thing!

Choose an username... said:
Heh. I don't know if there are flashable stock zips for the A2017G, the way I know of is flashing the stock recovery and using an official zip. But you shouldn't go back to stock if you want to use custom ROMs. Try this:
-Get an SD card, put
~ a custom ROM (RR, LOS,NucleaROM (i prefer NucleaROM, just sayin)),
~a Magisk 13.3 zip or SuperSU 2.82 zip,
~an OpenGApps zip (I use pico), arm64,
~a TWRP 3.1.1-0.img and
~A2017X Universal Bootloader and A2017G modem.
-Wipe system, data, cache and dalvik
-Install the Universal Bootloader, then the Modem, then the ROM and last the GApps and magisk/SuperSU
-If you had something important on the internal storage put it on the SD with the File manager under Advanced
-Go to Wipe -> Format data -> type Yes. This will get rid of the possible encryption from the stock ROM, but it will wipe your internal storage too.
-Reboot to system
You can use the 5 seconds screen to get to TWRP with the Volume buttons. Pretty handy I guess. There's a zip out there that gets rid of that screen, but you risk black-screening your phone with what seems to be no immediate fix (you'd be looking at an RMA)
So, after you use the phone and open TWRP again, you'll have an old version of it (3.0.1N-0 or sth). So go to Install, choose Install image, and select the TWRP 3.1.1-0.img on your SDcard. Then Reboot -> reboot to recovery and you can do whatever you want.
Click to expand...
Click to collapse
Tried exactly the steps you descriped, but no luck ---- still stuck in animation
Will try it tomorrow with Magist.
How can I go back to total stock.
Tried anything I found on xda, but no luck.
When I flash the ZTE B05 zip, I don't even get the boot animation.

Sui77 said:
Tried exactly the steps you descriped, but no luck ---- still stuck in animation
Will try it tomorrow with Magist.
How can I go back to total stock.
Tried anything I found on xda, but no luck.
When I flash the ZTE B05 zip, I don't even get the boot animation.
Click to expand...
Click to collapse
How do you flash the B05 zip? Did you try to flash the official zip?? lol
Follow my guide on the Guides section ("back to stock safely" or sth), it works...

Choose an username... said:
How do you flash the B05 zip? Did you try to flash the official zip?? lol
Follow my guide on the Guides section ("back to stock safely" or sth), it works...
Click to expand...
Click to collapse
I tired to flash a B5 an B5 bootstack with TWRP 3.1.1 -> not able to boot
Then i flashed, according to your guide, the stock recovery and now the device seems to be really bricked.
After the ZTE logo a lying robot appears for half a second and after that, the device is dead.
Can't boot into TWRP, can't use adb, EDL, ...

Ok, managed to get back TWRP.
But I really don't know how so solve my issue of how to come back to stock :crying:
Flashed a B05 stock (zip) and B05 bootstack and Magist....stuck in boot animation (AXON picture collage).
Fu....

Update:
Managed to flash this files:
ZTE_A2017GV1.0.0B09_BootStack_by_tron1.zip
ZTE_A2017GV1.0.0B09_StockSystem_by_tron1.zip
TWRP 3.1.1.0
Phone is up and running with A2017GV1.0.0B09
How can I upgrade to the B05 bootstack and the B05 ROM

Sui77 said:
Update:
Managed to flash this files:
ZTE_A2017GV1.0.0B09_BootStack_by_tron1.zip
ZTE_A2017GV1.0.0B09_StockSystem_by_tron1.zip
TWRP 3.1.1.0
Phone is up and running with A2017GV1.0.0B09
How can I upgrade to the B05 bootstack and the B05 ROM
Click to expand...
Click to collapse
to go back to stock, download the full zip of any version you want, and download stock recvovery from b08, you have flashed it.
from twrp, format data, and try to boot, if you cannot, reflash b09 recovery from twrp, select image and the recovery you download, then go to stock recovery and update from sdcard. it allways work for me, if you stuck in boot animation again, reboot recovery and wipe data.
after you succesfully boot, reboot edl, and reflash twrp, the version you were using before witn axon7tool, thats all

Sui77 said:
Update:
Managed to flash this files:
ZTE_A2017GV1.0.0B09_BootStack_by_tron1.zip
ZTE_A2017GV1.0.0B09_StockSystem_by_tron1.zip
TWRP 3.1.1.0
Phone is up and running with A2017GV1.0.0B09
How can I upgrade to the B05 bootstack and the B05 ROM
Click to expand...
Click to collapse
Just follow my guide for that. If you flash the B04 recovery (the one i provided) you shouldn't have any trouble

Managed to flash the B05 and phone is up and running.
Made a backup by using TWRP 3.1.1.0 and flashed CarbonRom, which also worked nicely.
However, I'm not able to flash LOS by using the B05 bootstack.
I'm too dumb for this phone

Sui77 said:
Managed to flash the B05 and phone is up and running.
Made a backup by using TWRP 3.1.1.0 and flashed CarbonRom, which also worked nicely.
However, I'm not able to flash LOS by using the B05 bootstack.
I'm too dumb for this phone
Click to expand...
Click to collapse
What B05 bootstack? You have to use the universal bootstack and the A2017G modem file...
Both are on the LOS thread. It seems weird that carbonROM would even boot without the universal bootstack though

[How-To] Restore OOS from Oreo 8.1 | Restore factory encryption | Re-lock bootloader

You need to do this if you've flashed an Oreo 8.1 ROM and find that you can't get back to OOS because...
The ROM can't read /data so it hangs on the boot animation or reboots to recovery, even on a clean flash.
TWRP won't recognize your PIN/password or "default_password".
You've tried re-formatting /data from TWRP several times and it doesn't solve your problem.
Here is how to get back to 100% stock and/or restore factory encryption, which is different than Oreo 8.1 encryption:
1. Back up /sdcard to your PC as it will be erased with all of your files, pictures, music, etc.
2. Flash the stock recovery from bootloader.
Code:
fastboot flash recovery [I]stock_recovery.img[/I]
Latest OOS official stock recovery
Latest OOS beta stock recovery
3. Restore system setting in recovery.
This step is necessary to restore factory formatting and encryption of /data.
If a password/PIN is set, click “I forgot my password.”
Boot into stock recovery. Once there, go to Wipe data and cache > Reset system setting and Erase everything(Music, pics, etc.).
Note: If you don't do the "Erase everything..." option, factory encryption will not be reset.
4. Boot TWRP from bootloader.
You could flash TWRP and reboot to recovery, but TWRP will get overwritten with the stock recovery when OOS boots anyway. It's faster just to boot TWRP from a command prompt. Use the command:
Code:
fastboot boot [I]twrp-recovery.img[/I]
I recommend using using:
[RECOVERY][dumpling] TWRP 3.2.1-0 for Oreo (8.0 and 8.1) by codeworkx
5. While in TWRP, move “OOS...ROM.zip” to the SD card.
In Windows File Explorer, copy OOS...ROM.zip to the device.
Alternately, you may use the following ADB command from a command prompt
Code:
adb push [I]OOS...ROM.zip[/I] /sdcard/
Since OOS is a very large file (1.6GB), this will take 5-10 minutes.
Latest OOS signed flashable zip
Latest OOS beta (Oreo) flashable zip
6. Flash OOS...ROM.zip from TWRP.
7. Reboot system.
Your device will be formatted, encrypted and loaded with the stock recovery and ROM as it came from the factory. You may need to find the OOS...ROM.zip you pushed to /sdcard and delete it from emulated storage (/storage/emulated) if you don't see it at /sdcard after booting the ROM.
8. Optional: To re-lock your your bootloader, follow these additional steps:
This can only be done from a factory-supplied OOS ROM (including Oreo) with no modifications or the phone will not boot!
Enable USB debugging under Developer options.
Reboot to bootloader.
Unlock the bootloader with the following command:
Code:
fastboot oem lock
Return to Developer options and turn off "OEM unlocking"

Thank you for the write up .. nicely done :good:
Sent from my OnePlus5T using XDA Labs

It gave me an error 1 in TWRP. I had to do the following:
1) Make sure the bootloader remains unlocked
2) Back your apps up in TitaniumBackup
3) Back your /sdcard partition up on your computer so you don't lose anything
4) Reflash stock recovery in the bootloader
5) Boot into stock recovery and hit "forgot password" when it asks for your lock code
6) Boot back into bootloader and reflash TWRP
7) Place stock OOS zip onto the /sdcard partition
8) While you're in TWRP, flash stock recovery through its image flasher then reboot into recovery
9) Flash stock OOS, reboot, and then mod however you want
Click to expand...
Click to collapse

blackknightavalon said:
It gave me an error 1 in TWRP. I had to do the following:
Click to expand...
Click to collapse
Will in 9th last step restoring from nandroid OB-1 work ?
It should I guess
Sent from my ONEPLUS A5010 using Tapatalk

Bump!
I made a big update to the OP today with more explanation, more detail and download links.

Thanks buddy, that tutorial worked perfectly!

The other way is to flash rollback image to Nougat in stock recovery.
https://goo.gl/YRyrt6

there are no other ways to revert back to stock OOS without affecting internal sd /sdcard ?
thanks for the guide above.

Ok I'm a bit Rusty. Flash from bootloader? Meaning adb? Then adb TWRP then boot to TWRP then flash stock room(s)?

Ippolito1971 said:
Ok I'm a bit Rusty. Flash from bootloader? Meaning adb? Then adb TWRP then boot to TWRP then flash stock room(s)?
Click to expand...
Click to collapse
Please do not quote the whole OP just to get someone's attention. A mention (@the Doctor) would suffice.
To answer your question, flash the stock recovery with the fastboot command:
Code:
fastboot flash recovery [I]stock_recovery.img[/I]
The only ADB command involved is "push" to get the ROM onto the sdcard in step 5.

Thx @the Doctor. My apologies.

Thanks for the writeup, I'll probably try soon and report back.

Thanks for this, may need it. Plan to flash DU 8.1 tomorrow. So you can't just restore an ob1 or ob2 nandroid from a custom ROM?

tcat007 said:
Thanks for this, may need it. Plan to flash DU 8.1 tomorrow. So you can't just restore an ob1 or ob2 nandroid from a custom ROM?
Click to expand...
Click to collapse
You can, but TWRP will not recognize your PIN or password while in OOS, so you'll have to set lockscreen security to none or swipe. Or you could do the procedure in the OP, then restore only data from your nandroid. You'll have to re-flash Magisk or any other mods after that.

I don't use a pin for backups or restores. Since I seem to have to format internal storage to get a custom ROM to boot, was just wondering if restore of oos nandroid works once on DU.
Sent from my OnePlus5T using XDA Labs

hello thanks for the guide just did this when i boot i cant connect to any wifi network thanks

How can I get my wifi back after reverting to 4.7.6? Ive tried EFS backup and everything possible but the only way to get wifi back is to flash an Oreo zip.

forty9er said:
hello thanks for the guide just did this when i boot i cant connect to any wifi network thanks
Click to expand...
Click to collapse
Did you restore to 4.7.6 or Oreo Beta 1/2?
Dazed No More said:
How can I get my wifi back after reverting to 4.7.6? Ive tried EFS backup and everything possible but the only way to get wifi back is to flash an Oreo zip.
Click to expand...
Click to collapse
Have you flashed OOS Oreo Beta? My theory is that the firmware won't downgrade back to OOS 4.7.6, but I'm not sure. I've only restored back to OOS OB1/2, and wifi has worked perfectly every time.

the Doctor said:
Did you restore to 4.7.6 or Oreo Beta 1/2?
Have you flashed OOS Oreo Beta? My theory is that the firmware won't downgrade back to OOS 4.7.6, but I'm not sure. I've only restored back to OOS OB1/2, and wifi has worked perfectly every time.
Click to expand...
Click to collapse
Flashing Oreo beta is the only way to get it back as myself and others have found in the thread that was started on the subject. I hadn't seen that initially when I posted in here.
I was hopeful that following your method to a T would get me my wifi back on 4.7.6 but it wasn't meant to be. Absolutely nothing I have tried in the last 24 hours has worked to get it working on 4.7.6 including multiple clean and dirty flashes of the full 4.7.6 zip, twrp, stock recovery, restoring multiple backups, restoring EFS, factory reset, wipes, etc.
You might want to add that to the OP that if you revert to 4.7.6 that wifi will not work.

Dazed No More said:
You might want to add that to the OP that if you revert to 4.7.6 that wifi will not work.
Click to expand...
Click to collapse
Thank you, and done. :good:

Can't get custom ROM installed

I'm having a very difficult time getting this phone setup. I can get very, very close... but then it starts boot looping into recovery.
So starting at the beginning, here is what I did:
- Booted up phone, make sure it works and connects to wifi (I find out later that it got encrypted, even though I didn't set a PIN).
- Inside the OS on first boot, I install and use the official bootloader unlock APK from Asus.
- Rebooted into the bootloader and fastboot flashed TWRP.
- Rebooted into TWRP and flashed the Oreo modem, current unofficial Carbon OS 6.1, nano gapps, and magisk 16.6.
- Rebooted and the Carbon ROM logo comes up. It works for about 2-3 minutes, then reboots.
- After many attempts to decrypt (and a lot of help from the forum), I successfully restore the phone to "WW_ZE552KL_14.2020.1712.85_M3.10.47.15_Phone-user.raw.zip" with the Asus tool.
- Phone is fixed and booting again to the OS, but I'm back to square one.
Second attempt:
- Thinking I need to flash the raw Oreo ROM (instead of just the Oreo modem), I use the Asus tool to flash "WW_ZE552KL_15.0410.1803.55_M3.10.47.19_Phone-user.raw.zip"
- The phone works fine and is now an Oreo ROM with an Oreo modem
- It's still unlocked, so I rebooted into the bootloader and fastboot flashed TWRP.
- Rebooted into TWRP and flashed the current unofficial Carbon OS 6.1, nano gapps, and magisk 16.6.
- Rebooted and the Carbon ROM logo comes up. It works for about 2-3 minutes, then reboots.
- After the reboot, it goes to TWRP... whether I just let it boot on its own, or press power when it says: Start - Continue to boot >
What am I doing wrong?

You're having a rough go at this one eh.
I know we talked about this before, but did you try a factory reset and wiping cache/dalvik before rebooting?

Yes. As we discussed before, you can't wipe cache from TWRP. So I'd wipe dalvik from TWRP, then reboot to the bootloader to do a "fastboot format cache".

I'm going to try a different ROM later this afternoon. Maybe that will make a difference.

Flapjack said:
I'm going to try a different ROM later this afternoon. Maybe that will make a difference.
Click to expand...
Click to collapse
Hello! I've been able to boot any ROM by:
1. flashing TWRP
2. rebooting to recovery
3. installing the ROM zip
4. rebooting to bootloader
5. fastboot continue
But when I restart the phone, it always boots to recovery(TWRP), so I have to repeat steps 4 and 5 to boot the ROM, which is
Could you try and tell me if it works for you too?
I'm gonna take a moment to read about the boot process in depth, as it seems there is no straightforward solution to this out there.

junglesnake said:
Hello! I've been able to boot any ROM by:
1. flashing TWRP
2. rebooting to recovery
3. installing the ROM zip
4. rebooting to bootloader
5. fastboot continue
But when I restart the phone, it always boots to recovery(TWRP), so I have to repeat steps 4 and 5 to boot the ROM, which is
Could you try and tell me if it works for you too?
I'm gonna take a moment to read about the boot process in depth, as it seems there is no straightforward solution to this out there.
Click to expand...
Click to collapse
1) Flash Oreo RAW (can be downloaded from @Saktis_STi' s unlocking thread.
2) Boot till system
3) Flash TWRP
4) Flash ROM, Magisk, GApps
5) Reboot
The reason why it reboots to TWRP is because of 'encryption' thingy.

BootloaderBoi said:
1) Flash Oreo RAW (can be downloaded from @Saktis_STi' s unlocking thread.
2) Boot till system
3) Flash TWRP
4) Flash ROM, Magisk, GApps
5) Reboot
The reason why it reboots to TWRP is because of 'encryption' thingy.
Click to expand...
Click to collapse
many many thanks! I was able to get Ressurection Remix working by now
your steps were right, and I will detail them better to tell how I made it work for others reading this thread:
1) Flash Oreo RAW
1.1 - @Saktis_STi's thread is a bit outdated. I downloaded the newest firmware from Asus website.
1.2 - I also had to find a recent recovery.img, which I think I got it from here https://forum.xda-developers.com/zenfone-3/how-to/original-recovery-img-boot-img-zenfone-t3572188
1.3 - I used the stock recovery's adb sideload to flash the stock ROM
2) Flash TWRP - all good here
3) Flash ROM, Magisk, GApps
3.1 - I wiped system, data, cache and dalvik.
3.2 - I flashed RR ROM, GApps and Magisk (EDIT 2: install all three before the first custom ROM boot, or GApps won't work)
3.3 - Performed a Factory Reset
4) REBOOTED TO GLORY!
For what it seems, the stock ROM encryption that is performed on the stock's first boot was the enemy.
Now one last thing... In Security -> Encription, my device is NOT encrypted.
Do I run the risk of ruining everything if I encrypt it?
EDIT: No, it didn't break, working fine

junglesnake said:
1) Flash Oreo RAW
1.1 - @Saktis_STi's thread is a bit outdated. I downloaded the newest firmware from Asus website
Click to expand...
Click to collapse
lmao. His RAW firmware version is the latest version though
https://forum.xda-developers.com/zenfone-3/development/updated-unlock-relock-bootloader-t3749456
Anyways, enjoy your phone running on custom ROM :good:

How to install ANY CustomROM on OnePlus6T from OOS/CustomROM

So, I searched the internet for a method to flash a CustomROM on the OnePlus 6T. But somehow none of them worked, so I worked on one myself that at least works for me.
There are 2 methods, use Method A if you don't have a custom ROM installed and still use OxygenOS. Use Method B if you are using a custom ROM and want to have another one:
Method A: From OxygenOS to CustomROM
1. boot in twrp
2. in twrp, do a factory reset
3. flash latest oos zip(flashable ota, link will be below)
4. flash twrp installer zip(i recommend mauronofrio´s twrp, link wil be below)
5. check current slot, then reboot in twrp
6. check if slot changed, then do a factory reset
7. flash latest oos zip
8. flash twrp installer zip
9. reboot recovery, and check if slot changed
10. factory reset
11. flash custom rom zip
12. flash twrp installer zip
13. reboot twrp(check current slot)
14. check if slot changed(if yes:it worked, if no:repeat)
15. additional: flash magisk&gapps
then,your rom is ready to use
Method B: From Custom ROM to another Custom ROM
1. reboot to twrp
2. in twrp, do a factory reset
3. then select advanced wipe: wipe system,cache,data. DON’T WIPE VENDOR
4. flash custom rom zip
5. flash twrp installer zip
6. check which slot you´re in
7. reboot twrp
8. if slot changed, everything worked
9. flash gapps and magisk if you want
then, your rom is ready to use
So, I hope I have spared you many problems and wish you much fun with your Devices.
Links:
Mauronofrio TWRP: click here
OxygenOS Stable OTA 10.3.1: click here

DirtryElectro said:
So, I searched the internet for a method to flash a CustomROM on the OnePlus 6T. But somehow none of them worked, so I worked on one myself that at least works for me.
.......
Links:
Mauronofrio TWRP: click here
OxygenOS Stable OTA 10.3.1: click here
Very important note: Download the FULL OTA, not the local-upgrade OTA!
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Some of those steps are unnecessary. Like doing a Factory Reset each time you boot to TWRP as that will mess up your Encryption. And in Method B, you mention to Wipe System. DO NOT UNDER ANY CIRCUMSTANCES WIPE SYSTEM ON THE 6T. IT WILL MESS UP YOUR DEVICE. This is the method I use to flash ROMs.
1. Boot to TWRP
2. Flash the latest version of Stable OOS for your Device and latest TWRP Installer for your Device. -> Reboot to Recovery.
3. Flash the latest version of Stable OOS for your Device and latest TWRP Installer for your Device. -> Reboot to Recovery.
4. Flash ROM + TWRP ,Format Data (Go to Wipe, in the lower right corner Format Data, type in 'YES' and hit Enter) -> Reboot to System
5. After first Boot, You can Reboot to Recovery & Flash Magisk (Optional).
These are for EvolutionX that has Gapps built-in so you don't need to flash Gapps. Otherwise you can Skip the Format Data after ROM flash in Step 4, Reboot to Recovery, Flash Gapps and then Format Data. I use these and they have worked flawlessly for me. Also when switching from one AOSP based ROM to another, it's generally recommended to flash OOS Before.

DarthVader said:
Some of those steps are unnecessary. Like doing a Factory Reset each time you boot to TWRP as that will mess up your Encryption. And in Method B, you mention to Wipe System. DO NOT UNDER ANY CIRCUMSTANCES WIPE SYSTEM ON THE 6T. IT WILL MESS UP YOUR DEVICE. This is the method I use to flash ROMs.
1. Boot to TWRP
2. Flash the latest version of Stable OOS for your Device and latest TWRP Installer for your Device. -> Reboot to Recovery.
3. Flash the latest version of Stable OOS for your Device and latest TWRP Installer for your Device. -> Reboot to Recovery.
4. Flash ROM + TWRP ,Format Data (Go to Wipe, in the lower right corner Format Data, type in 'YES' and hit Enter) -> Reboot to System
5. After first Boot, You can Reboot to Recovery & Flash Magisk (Optional).
These are for EvolutionX that has Gapps built-in so you don't need to flash Gapps. Otherwise you can Skip the Format Data after ROM flash in Step 4, Reboot to Recovery, Flash Gapps and then Format Data. I use these and they have worked flawlessly for me. Also when switching from one AOSP based ROM to another, it's generally recommended to flash OOS Before.
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Click to collapse
these are just the steps which worked for me, but ok

DarthVader said:
Some of those steps are unnecessary. Like doing a Factory Reset each time you boot to TWRP as that will mess up your Encryption. And in Method B, you mention to Wipe System. DO NOT UNDER ANY CIRCUMSTANCES WIPE SYSTEM ON THE 6T. IT WILL MESS UP YOUR DEVICE. This is the method I use to flash ROMs.
1. Boot to TWRP
2. Flash the latest version of Stable OOS for your Device and latest TWRP Installer for your Device. -> Reboot to Recovery.
3. Flash the latest version of Stable OOS for your Device and latest TWRP Installer for your Device. -> Reboot to Recovery.
4. Flash ROM + TWRP ,Format Data (Go to Wipe, in the lower right corner Format Data, type in 'YES' and hit Enter) -> Reboot to System
5. After first Boot, You can Reboot to Recovery & Flash Magisk (Optional).
These are for EvolutionX that has Gapps built-in so you don't need to flash Gapps. Otherwise you can Skip the Format Data after ROM flash in Step 4, Reboot to Recovery, Flash Gapps and then Format Data. I use these and they have worked flawlessly for me. Also when switching from one AOSP based ROM to another, it's generally recommended to flash OOS Before.
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Click to collapse
this helped me greatly! following the instructions above had my files corrupt when id factory reset. i dont have an otg usb. so the instructions above kind of troubled me. again, thank you!

Beefybeardedbear said:
this helped me greatly! following the instructions above from OP had my files corrupt when id factory reset. i dont have an otg usb. so the instructions from OP kind of troubled me. again, thank you!
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