Cant get into TWRP/Recovery after CFW flash - Samsung Galaxy S8 Questions and Answers

I'm not a complete noob, but also haven't done anything regarding phone flashing in a while and this technology seems to change very quickly, so hard to keep up....
The Issue
I cant get into Recovery (Power + Bixby + Vol Up), my phone just shows the Samsung Logo and stays that way.
Forward
I have a SM-G950FD
I have no clue what the CSC code is
I am able to get into Download mode
I have a recent backup of EFS, CPEFS, and RADIO partitions
Odin does detect my phone
OEM Lock is OFF
What I did
I cant remember the sequence of events very well, just that I was on Nougat (I think) and wanted to try newer roms
I tried LightROM ([Samsung][ROM][PIE][9.0][13-July-2019][S8_S8+_F_FD][v21]LightROM.zip) which worked OK but I found out I wasn't rooted
So after using TWRP to flash a few more things, like SuperSU and still not getting a rooted device I decided to try a different CFW
I tried to install (hadesRom_PIE_Stock_v9.0.zip) from TWRP (This did not boot into the ROM)
I then tried (BatStock-Rom_SM-G95XF_V1.2.0.zip) from TWRP (tHis also did not boot into the ROM)
I then probably tried a few other things...
My phone now only starts with Samsung logo screen, and I cant get to Recovery/TWRP
Messing with ODIN
Only thing here is that I tried to install the latest version of TWRP with ODIN. While the flash succeeds, I still cannot get to Recovery.
I probably did try an older version of TWRP first (such as twrp-3.2.1-0-dreamlte.img.tar)
and I probably tried an older version of ODIN earlier too (Odin3_v3.12.5)
Last thing I tried was to flash latest TWRP (twrp-3.3.1-0-dreamlte.img.tar) with the latest ODIN (Odin3_v3.13.1)
Anything I can do to get TWRP back?
Thanks so much to everyone who keeps up with this stuff

Ok, made some progress. In order to repair phone, just need to use ODIN to flash (AP, BL, CP, & CSC) via Official Samsung 7.0 Nougat ROM.
Then after I install TWRP (twrp-3.2.1-0-dreamlte.img.tar) phone goes into bootloop.
Re-installing 7.0 Nougat to repair recovery.
Is there a magic combination to installing PIE + TWRP + SuperSU ?

Downloaded a 9.0 Pie Samsung Official from Austria (G950FXXU5DSFB_G950FODX5DSF1_MAX.zip) and Installing.
This guide looks promising https://www.androidinfotech.com/root-samsung-galaxy-s8-sm-g950f-pie/ . . .

the guide was very helpful. I now have Android 9.0 Pie + TWRP + Magisk (instead of supersu)
General Guide, Works even for phones with Issues
https://www.androidinfotech.com/root-samsung-galaxy-s8-sm-g950f-pie/
If you don't see OEM Unlock in Developer Options . . .
https://www.the***********.com/fix-missing-oem-unlock-toggle-samsung-galaxy-devices/
If you get "Cannot mount /data and unable to find crypto footer." when you try to install the Big 3 (Magisk-v19.3.zip, no-verity-opt-encrypt-6.0.zip, RMM-State_Bypass_Mesa_v2.zip
https://forum.xda-developers.com/s7-edge/help/twrp-mount-data-unable-to-crypto-footer-t3360331/page3
next I will attempt a Pie Custom ROM....

Related

[Q] I flashed a cm based ROM now I can't flash touchwiz or restore my touchwiz backup

If i try either I get stuck on boot screen.
Doing everything by the book. But here's a run down of what's going on. I updated to lollipop prior to rooting. Then I flashed dynamic pop ROM. All good so far. I made a nandroid on stock rooted ROM. Then I flashed aicp stock ROM. All good again aside from ROM issues which is why I wanted to go back.
I have a Canadian note 4 910w8. If that matters. Latest twrp recovery. All relavent files on external SD.
All I want is my stock rooted ROM back. Did flashing the cm based aicp ROM mess with the build prop?
My device name is now trltetmo whereas it should say trltecan. Instead of trying to be a hero I'm hoping someone here can help me. I don't have a computer with me right now. So anything I do has to be done via
Recovery options.
I haven't tried to flash another stock based ROM. But what I have no is android 5.1.1 and I believe the tw based ROMs were 5.0.1
Would wiping internal storage fix my issue? I've never had to do it before. I assume should be OK to try
Hi,
As I understood you wish to install stock ROM to your Galaxy Note 4 (SM-N910W8 Canadian running on a Virgin network) which means you are going to downgrade your firmware from Android 5.1.1 to 5.0.1. You also want to get root access once you have done that and twrp recovery. If I am right then you should download your stock ROM from sammobile.com/firmware and search for your version. I believe you have to search for this "N910W8VLU1BOC4_N910W8OYA1BOC4_VMC.zip" and flash it using ODIN v3.09.
If in case you have stuck in a boot loop (as you stated above) then enter Recovery Mode (Press Power + Home + Volume Up) and wipe cache. If you are still stuck on a boot loop then enter Recovery Mode again and do a Factory Reset (Note: factory reset will delete everything from your phone).
If you cannot enter Recovery Mode try going into Download Mode (Press Power + Home + Volume Down) and flash twrp recovery (in your case) or you can try flashing cwm or even use stock Recovery (this, if I remember well enough can be fixed by using CFautoroot method to root your device).
If you need any detailed information on how to do any of the above I can provide anything you need. Hope this helps, and let me know on what results you get.
PS: Sorry I cannot provide any links at the moment since I am a new user.

dm-verity verification failed

2 days ago i flashed twrp on my pure stock note 4, i did backup my rom including EFS using twrp and then flash kyubi rom with nameless kernel, it all went well. just now i wipe data ,system, cache on twrp and restore my backup stock rom and it went well too...and then i try to flash stock rom using odin so i can get back the stock recovery mode for OTA update when MM releases.. the flashing was a sucess and phone booted but my data inside werent wipe.
so i went to recovery mode and saw this dm-verity verification failed on the bottom i proceed to wipe data and reboot my phone, its all working now no problems except i cant reset my phone with the setting inside it will just bring me to recovey mode and stay there with that message.
now i did some research, some saying will bootloop and stuffs but mine is all ok no problem except i cant reset it inside the settings..
anyone can help me get rid of that message/problem?
If you format everything in advance format in twrp and then flash stock firmware this message will go away.
got the same problem. Then I went to a local store. They helped me. Here are steps
1. Pull out your battery, check your serial number (S/N:....)
2. Download smart switch, enter emergency software recovery..... Enter your serial number
3. Turn off your phone. Enter download mode or sth ( I don't remember it clearly. just power + vol down or up. just try it)
4. Smart switch will recognize your phone. Choose a firmware to download. then wait
5. Enjoy stock firmware
Use kies3 reinstall drivers, then use emergency recovery in kies to reinstall your current firmware or opt to update to latest or most recent release or version then follow kies instructions
rooted s5 smg900r4
Hello everyone
I have found a way to fix dm-verity and DRK issues and it works like official, meaning no errors in stock recovery and OTA works with Official firmware, the problem is related to corrupted/deleted 3 files on /efs partition. I have tested it on SM-N910C so I guess it works on other Exynos variants, perhaps even on snapdragon if the partition layout is similar? Kies won't restore DRK or dm-verity check because it doesn't write to EFS. I can fix yours if someone is interested via Team Viewer, you will need the following:
1. PM contact me for Skype ID
2. Stock rom, rooted (any root method)
3. Adb debugging enabled and drivers installed (Kies or SmartSwitch)
After repair you can enter your stock recovery and confirm there is no DRK/dm-verity red letters error.
Regards,
magix01
please guide us the proceedure here .. i have a phone with same problem & i have to update it to MM ...
dork997 said:
If you format everything in advance format in twrp and then flash stock firmware this message will go away.
Click to expand...
Click to collapse
Mine still says fail. but it also says "need to check drk first" could anyone possibly help me im stuck.the phone loads up and everything. but when i try to root or anything or flash any other firmware than n910pvpu5dqi5 it fails about 4 seconds in to flashing on odin. ive downloaded every possible firmware specific to the SM-N910P but only one worked.
im a big noob with the note 4 this is my first luckily its not my daily phone yet. im very familiar with the note 3 n900t but im finding they are very different. any advice would be appreciated!
Sir, please reply
When i unlocked my bootloader on my redmi phone this warning comes, but after clicking power button it will successfully boot to system but i m confused did i flash any rom in it, is it safe or not
Manish_k said:
Sir, please reply
When i unlocked my bootloader on my redmi phone this warning comes, but after clicking power button it will successfully boot to system but i m confused did i flash any rom in it, is it safe or not
Click to expand...
Click to collapse
If you just unlocked your bootloader and thats it, your rom should still be the stock one.

[Solved] Boot loop after installing rom

I tried to install the batman rom. I must have done something wrong, but now I cant reboot in to system, nor can I reboot into twrp. I tried installing twrp again and it fails when following the instructions. Now I only get a bootloop
I installed batman rom with defaults, It changed csc to german.
I have a sm-g950FD
Followed this guide:
https://www.youtube.com/watch?v=VTi3uBkpJic
Downloaded the bootloader QF7
flashed it via odin.
Was able to flash the twrp but cant boot into twrp
I followed this guide to completely reset my device:
https://www.youtube.com/watch?v=2y0ZZxcNVnE
and nothing
it continues to bootloop. Can anyone give me some insight?
Edit Downloaded this firmware:
SM-G950FD_1_20170920085414_7s78fc4emo_fac from http://updato.com
Flashing now lets see what happens...
Edit: Nothing worked. I think I am completely stuck Any suggestions?
I am not sure which firmware to flash? I dont know my pda version any way I can find out?
It is a sm-g950FD and when I first booted it the language was in spanish. Looks like there are very few sm-g950FD made for the spanish market. 3 guesses: Bolivia, Philippines, Brazil (I know they speak Portuguese). Does it matter which region I get the firmware from?
Installed the Bolivian G950FXXU1AQF7
Weird series of events, I was just about to give up, while handing it to the postdoc in my lab I pressed either power + Vol up or power + Vol down (I don't remember which one) and suddenly I see the little android with the spinning icon on a blue screen. Essentially a miracle WTF?
Same phone same issue for me. I had to get the original firmware from sammobile site and use Odin to flash the back to stock. No matter what with other ROMs I get bootloops.
Did you manage to solve the problem. I also followed the guide, odin pass, but the phone after reboot goes into bootloop again.

can't install twrp for xposed galaxy s4 sgh-i337m

I recently upgraded my phone software from 4.4.2 to 5.0.1 and i need to download xposed again and when i searched online it showed that i need to download twrp and i tried this method using adb
https://www.xda-developers.com/how-to-install-twrp/
but after entering the step 4 ,the command control just "showed a searching for device message" .
i had also tried via odin but recovery did'nt show up when i pressed volumeup+power+home . just a bunch of letters on the top right corner . Pls help me (i am a noob)
Forum for the 337m is here: https://forum.xda-developers.com/galaxy-s4-att
Use Odin to flash the tar version of TWRP.
could'nt boot into twrp recovery
audit13 said:
Forum for the 337m is here: https://forum.xda-developers.com/galaxy-s4-att
Use Odin to flash the tar version of TWRP.
Click to expand...
Click to collapse
i tried your method and decided to see if it was working properly and i followed the instruction for rooted devices in https://www.xda-developers.com/how-to-boot-to-recovery/
Not only it did'nt work now my phone is just displaying the samsung galaxy s4 logo with words on the top left corner that says
recovery booting. . . .
recovery is not seandroid enforcing
set warranty bit : recovery
i just also checked the twrp manager app https://play.google.com/store/apps/details?id=com.jmz.soft.twrpmanager
it shows "custom recovery not installed or not detected"
How did you flash TWRP? You confirmed that the model # of the phone is sgh-i337m?
I could never get the fastboot instructions in the original post to work since all Samsung phones (non-Google Play versions) I have used did not support fastboot commands.
audit13 said:
How did you flash TWRP? You confirmed that the model # of the phone is sgh-i337m?
I could never get the fastboot instructions in the original post to work since all Samsung phones (non-Google Play versions) I have used did not support fastboot commands.
Click to expand...
Click to collapse
I downloaded the .tar file from the team win website for the samsung galaxy s4 canada and i opened odin .
switched off my phone , put it in download mode (volume down+power+ home ,pressed volume up again for confirmation)
connected to computer , odin shows added , clicked AP selected the .tar file and clicked start without making any changes in the options tab . Phone restarts
Flashing TWRP with Odin on a phone running a stock ROM will replace the stock recovery; however, if auto reboot is selected in Odin, rebooting the phone after flashing TWRP will cause the stock recovery or overwrite TWRP and this is one reason some people uncheck auto reboot.
I suggest starting over by flashing the latest stock ROM from sammobile.com with Odin 3.07.
audit13 said:
Flashing TWRP with Odin on a phone running a stock ROM will replace the stock recovery; however, if auto reboot is selected in Odin, rebooting the phone after flashing TWRP will cause the stock recovery or overwrite TWRP and this is one reason some people uncheck auto reboot.
I suggest starting over by flashing the latest stock ROM from sammobile.com with Odin 3.07.
Click to expand...
Click to collapse
I have just flashed my phone with stock rom from sammobile , after that i put into download mode again and did'nt select the autoreboot . when it was completed i tried going into recovery mode without switching on my phone so i removed the battery and placed it again and pressed volume up+power+home and i still got the same things that showed up before .
Did you try flashing different versions of TWRP? I suggest starting with 2.87. You can then use TWRP itself to flash newer zip versions.
audit13 said:
Did you try flashing different versions of TWRP? I suggest starting with 2.87. You can then use TWRP itself to flash newer zip versions.
Click to expand...
Click to collapse
Thank you so much . It finally loaded twrp and i started with version 2.8.4.0 FYI .
That's great

S8 G950F - stuck on verification following unroot.

hi
ive got a s8, which was rooted using magisk, but was having issue, so was advised to unroot, remote and try superSU instead.
in the process of flashing stock rom AND 8.0, the phone now boots up to black screen showing verification failed, only option to reset.
when i press reset, all it does is restarts, loads up TWRP which had been installed before,
TWRP runs some program and fails and then phone goes back to black screen showing verification failed.
ive booted it into download mode, in the hope that i can just start again by simply lashing fresh stock rom, but it connects to odin fine, but when i click start, it gives a red error every time.
so i cant access the standard recovery menu as ive got TWRP so that loads instead and it looks as that is corrupted and i cant flash new fresh rom from download as odin brings up issue
ive check another phone and there is no issue with odin or the usb-c cable,
there is an issue with the s8 and odin does not like something in the s8 so wont let me flash anything to it,
any advice would be greatly appreicated.
When you flashed the stock rom using odin did you flash a bootloader aswell as the rom or did you just flash the rom the problem might be that the bootloader was for pie and the rom is oreo or vice versa whenever I flash back to stock I fill all but one of the boxes in odin
i suspect it was all oreo, as i downloaded as a complete file but ill check and get back to you
thanks for advice.

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