How to flash stock Rom with format everything - Samsung Galaxy Tab A series Questions & Answers

I have a P550 tablet, using Odin i installed stock Rom but it did not format, it did not delete everything in it. Using stock recovery factory reset does not work either.
School It managers disabled entering settings, so i guess they did something to tablet not format inside but i flash Rom still cant format it. How can i fresh install stock Rom?

yken said:
I have a P550 tablet, using Odin i installed stock Rom but it did not format, it did not delete everything in it. Using stock recovery factory reset does not work either.
School It managers disabled entering settings, so i guess they did something to tablet not format inside but i flash Rom still cant format it. How can i fresh install stock Rom?
Click to expand...
Click to collapse
Just factory reset in recovery. That's all you need to do to go back to factory fresh.
You dont need to do anything else, not sure what you're expecting other than that?

ashyx said:
Just factory reset in recovery. That's all you need to do to go back to factory fresh.
You dont need to do anything else, not sure what you're expecting other than that?
Click to expand...
Click to collapse
I learned there is a security program, wmware watch in the tablet, it does not permit to factory reset. I can flash Rom but i dont know why flashing rom does not erase things.

yken said:
I learned there is a security program, wmware watch in the tablet, it does not permit to factory reset. I can flash Rom but i dont know why flashing rom does not erase things.
Click to expand...
Click to collapse
I've never heard of such a thing and there's no reason for it to exist. Are you sure you have used factory reset in recovery?
Flashing a rom does not wipe the data partition.
You need to factory reset in recovery to do this.

ashyx said:
I've never heard of such a thing and there's no reason for it to exist. Are you sure you have used factory reset in recovery?
Flashing a rom does not wipe the data partition.
You need to factory reset in recovery to do this.
Click to expand...
Click to collapse
Mdm does not allow factory reset. Google this.
Factory reset does not work. I can use odin all i need is if its possible to format using odin.

yken said:
Mdm does not allow factory reset. Google this.
Factory reset does not work. I can use odin all i need is if its possible to format using odin.
Click to expand...
Click to collapse
Yes I'm aware of mdm, but have only ever come across this on demo devices.
But that's not what you posted.
Also it is only stock recovery that implements mdm.
If you install twrp then factory reset using twrp it will remove the restriction.
That is the only way I know how. However this may require OEM unlock enabled, of which it seems you can't do.

Related

Can't wipe Dalvik-cache from Recovery?

It gives me an error "Run 'wipe dalvik' via ADB.
Should I be able to run it from the recovery? I suspect my recovery ROM copied incorrectly. Is there any way I can reflash the ROM without doing a factory reset and re-rooting.
If not, then will doing a factory reset via Recovery work? And will the phone need to be reprogrammed to work on Sprint with my number, etc?
Thanks!
fatkitty420 said:
It gives me an error "Run 'wipe dalvik' via ADB.
Should I be able to run it from the recovery? I suspect my recovery ROM copied incorrectly. Is there any way I can reflash the ROM without doing a factory reset and re-rooting.
If not, then will doing a factory reset via Recovery work? And will the phone need to be reprogrammed to work on Sprint with my number, etc?
Thanks!
Click to expand...
Click to collapse
Go download the 1.5.2 recovery ROM, flash it the same way you did the original instructions are there. If you still have the issue, post back.
I have had simaler problems in the past and sometimes I was able to just reboot the system and use the fresh kitchen go to create nandroid backup in the kitchen it used adb to reboot into recovery and then everything worked fine after that.
on the other hand there have been a couple times where I just had to bite the bullet RUU and reroot then flash a backup.
hope this helps a little
dam KCarpenter you lurk here as much as I do. lol
wtphoto said:
dam KCarpenter you lurk here as much as I do. lol
Click to expand...
Click to collapse
HAHA Refresh every hour or so lol.
But I was reposting to say that you should try to wipe from the pre kitchen and see what happens there.
I re-pushed and flashed 1.5.2 recovery. I still get the "run wipe davilk from ADB" error when trying to wipe it from within the recovery rom.
What do you mean wipe it from pre-kitchen? Could someone please post some instructions.
Is there a command to run it via CMD?
I have never had it work.. even on multiple Heros. and MANY Recover re-loads
tyrnight said:
I have never had it work.. even on multiple Heros. and MANY Recover re-loads
Click to expand...
Click to collapse
I get force closes on any update I do. I thought clearing the cache fixes this problem?
If not can someone point me to instructions on starting from scratch? I would like to factory reset it but I need to know if I'll have to re-activate the phone to work on Sprint, or if it just works?
They are talking about on the Fresh Pre Kitchen 0.2 . Also if you do a wipe you will not have to activate the phone it will just reinstall the OS. I actually clearfed rteh cache using the pre-kitchen and it works fine now
athlet1c said:
They are talking about on the Fresh Pre Kitchen 0.2 . Also if you do a wipe you will not have to activate the phone it will just reinstall the OS. I actually clearfed rteh cache using the pre-kitchen and it works fine now
Click to expand...
Click to collapse
I see. I just factory reset my phone.
Now the question is; since I still I have my recovery ROM do I still need to root the phone again?
fatkitty420 said:
I see. I just factory reset my phone.
Now the question is; since I still I have my recovery ROM do I still need to root the phone again?
Click to expand...
Click to collapse
Oh, so I did a factory reset, re-rooted the phone, and installed Modaco's newest custom ROM.
I'm still getting force closes.
If I clear the cache will it fix the errors?
it depends if you just used the wipe data/factory reset in the recovery menue or if you actually used the RUU to reflash back to stock. if you used the RUU then yes you will have to reroot if you just used the recovery menue then no you will not have to.
wtphoto said:
it depends if you just used the wipe data/factory reset in the recovery menue or if you actually used the RUU to reflash back to stock. if you used the RUU then yes you will have to reroot if you just used the recovery menue then no you will not have to.
Click to expand...
Click to collapse
Great, I think I have this figured out now.
I went ahead and used Fresh's pre-Kicthen. It seems to be working great now.
Thanks guys!
Np good luck
and remember if you like any of flipzmode's stuff visit his site www.geekfor.me and help him out by either donating or at least click the adds
wtphoto said:
Np good luck
and remember if you like any of flipzmode's stuff visit his site www.geekfor.me and help him out by either donating or at least click the adds
Click to expand...
Click to collapse
I read "at least click the adds" wrong in my head and it turned out someting really dirty...
I have some problems.
I can not wipe cache and after install ROM I've got 'Force Close' apps.
How can I resolve that issues? I install again ROM and still ocurs errors.
Pls give me instructions what I must do.
Thanks
Why was I referred to this as a fix? For one, the command isn't even posted. Is their a command to wipe the dalvik-cache? If yes, what is the command that I would run?
I notice two options:
-w
Wipe the data partition
-d
Flash the data partition
Well if you don't use a2sd, this is the fix
That's a known "issue", the wipe script gives an error because it tries to wipe the dalvik-cache from the ext partition after it erased the dalvik-cache from /data. Since you don't have an ext partition it will exit and throw the error.
Don't worry about it, your dalvik-cache IS WIPED, even when you see the error.
Thanks regaw_leinad,
I kept attempting it with the latest fresh-toast rom but it would continue rebooting. It's the only rom that wouldn't have a successful dalvik wipe. I gave up and went back to damageless's SprintUpdate2.zip.
Thanks,
Zac

How can I remove encryption with custom recovery installed?

Factory Resets do not remove encryption with TWRP recovery. It will reset the phone like normal, but the encryption will still remain.
I am looking to try and remove encryption entirely so I can install 4.4 and CWM Recovery. I've heard you have to flash to stock but I don't know what packages, where to get them, and which way I should flash them. Any help is appreciated.
ThomasBags said:
Factory Resets do not remove encryption with TWRP recovery. It will reset the phone like normal, but the encryption will still remain.
I am looking to try and remove encryption entirely so I can install 4.4 and CWM Recovery. I've heard you have to flash to stock but I don't know what packages, where to get them, and which way I should flash them. Any help is appreciated.
Click to expand...
Click to collapse
You need to use the FORMAT DATA option, which will wipe the entire device, if you still get asked for password after that, flash factory image.
Flash the stock recovery....
ThomasBags said:
Factory Resets do not remove encryption with TWRP recovery. It will reset the phone like normal, but the encryption will still remain.
I am looking to try and remove encryption entirely so I can install 4.4 and CWM Recovery. I've heard you have to flash to stock but I don't know what packages, where to get them, and which way I should flash them. Any help is appreciated.
Click to expand...
Click to collapse
I had an Encrypted HTC One that I installed TWRP Recovery. TWRP could not decrypt the phone and the phone would not factory reset. Fixed by using Fastboot to flash the stock recovery and then was able to factory reset my phone.
Fastboot flash recovery recovery.img
Got the Sprint stock recovery image from viperboy (I'm too new to post links) the file name is: Sprint_One_stock_recovery.img
Search XDA with this file name you you will find it.
Too late for you I'm sure but maybe it will help some others.

Resetting my phone via recovery - Assiatance pls

I am on stock 5.1.1 (Offical) and want to hard reset everything on phone, to solve horrible lag problems.
I want to boot into recovery and wipe the- data,cache/dalvik cache & partition.
Once I delete the above, and restart the phone it will boot into clean default OS OR then I have to download & install the OS again that I presume I have to download from sammobile ? If yes, once I restrat the phone after deleting everything from recovery how to install OS... please help with complete details.
See instructions for flashing on Sammobile or in the Stickied genera section of faqs and guides .
Stock roms are flashed via odin .
Wiping from recovery should put the phone back to a factory fresh rom.
audit13 said:
Wiping from recovery should put the phone back to a factory fresh rom.
Click to expand...
Click to collapse
Okay, so once done the cleanup via recovery as stated above, phone will re-start into exsiting OS and no further action/download is required by me... have I understood it right ?
craige said:
Okay, so once done the cleanup via recovery as stated above, phone will re-start into exsiting OS and no further action/download is required by me... have I understood it right ?
Click to expand...
Click to collapse
Yes, factory reset from official recovery will wipe everything clean (minus the system partition). No further action required, just reboot the phone after you've reset it.
stonedead said:
Yes, factory reset from official recovery will wipe everything clean (minus the system partition). No further action required, just reboot the phone after you've reset it.
Click to expand...
Click to collapse
Yes system partiton, thats what I was thinking...
Now, say I want to even wipe partition and install the official OS all over again... how can I do that? - From what I understand, I have to download OS from sammobile, install Odin and then flash from there.... Can u guys provide more steps as I am not very confident.
you can use this as a reference..
https://www.youtube.com/watch?v=T95Eqftb7do
https://www.youtube.com/watch?v=DdDgaqsYrRs

Reset Phone on Root

Hi, I keep seeing that some people brick their phones due to the changes in the process. Question, Due to some battery drainage I am getting, I am trying to do a phone reset.
I currently have TWRP installed and rooted the phone using the jccuando method. What is the best way to reset the phone to factory so I can re-root again and do what I need to do without bricking? Any advice would be much appreciated!
matteosaeed said:
Hi, I keep seeing that some people brick their phones due to the changes in the process. Question, Due to some battery drainage I am getting, I am trying to do a phone reset.
I currently have TWRP installed and rooted the phone using the jccuando method. What is the best way to reset the phone to factory so I can re-root again and do what I need to do without bricking? Any advice would be much appreciated!
Click to expand...
Click to collapse
Definitely boot to twrp via hardware keys or a boot to recovery app.. Do not do it from the settings menu. It will put you into twrp bootloop until you boot from the hard keys anyway. Just remember to flash supersu after you factory reset before you boot or you'll have to boot back into twrp again and flash it.
Swizzle82 said:
Definitely boot to twrp via hardware keys or a boot to recovery app.. Do not do it from the settings menu. It will put you into twrp bootloop until you boot from the hard keys anyway. Just remember to flash supersu after you factory reset before you boot or you'll have to boot back into twrp again and flash it.
Click to expand...
Click to collapse
Thank you so much. So I see I can get to twrp no problem. What to do inside twrp before I bootloop or do I need to reset factory before I get to twrp? Then what to do after I am in a bootloop ?
matteosaeed said:
Thank you so much. So I see I can get to twrp no problem. What to do inside twrp before I bootloop or do I need to reset factory before I get to twrp? Then what to do after I am in a bootloop ?
Click to expand...
Click to collapse
If you used the method I told you there should be no bootloop. Just got to the section wipe and slide the slider for a factory reset. Then afterwards press back and go to your external sd and flash supersu again then reboot it will reboot twice after you flash supersu so don't worry.
Swizzle82 said:
If you used the method I told you there should be no bootloop. Just got to the section wipe and slide the slider for a factory reset. Then afterwards press back and go to your external sd and flash supersu again then reboot it will reboot twice after you flash supersu so don't worry.
Click to expand...
Click to collapse
Thank you. I actuallt just got done. I did factory reset instead and booted up fine. I took your advice and flashed supersu after the factory reset and i am all good now. I wonder the difference between factory reset and the format data. I was a little scared to factory reset so it woud not erase the rom.
matteosaeed said:
Thank you. I actuallt just got done. I did factory reset instead and booted up fine. I took your advice and flashed supersu after the factory reset and i am all good now. I wonder the difference between factory reset and the format data. I was a little scared to factory reset so it woud not erase the rom.
Click to expand...
Click to collapse
Format data erases all user data. Factory reset erases all but internal storage. So data format is more extensive.
Swizzle82 said:
Format data erases all user data. Factory reset erases all but internal storage. So data format is more extensive.
Click to expand...
Click to collapse
Cool thank you. I didnt have a problem since i backed up my apps with titanium.
Swizzle82 said:
Format data erases all user data. Factory reset erases all but internal storage. So data format is more extensive.
Click to expand...
Click to collapse
Hi, did everything with no problem. I got another question and not sure if you have the answer. I was hoping to re-lock the bootloader again. Do you know of a way to do that and get the phone to boot up to the system? I am trying to avoid the bootloader reboot message after turning on the phone! Thank you for all your help!
matteosaeed said:
Hi, did everything with no problem. I got another question and not sure if you have the answer. I was hoping to re-lock the bootloader again. Do you know of a way to do that and get the phone to boot up to the system? I am trying to avoid the bootloader reboot message after turning on the phone! Thank you for all your help!
Click to expand...
Click to collapse
Do not relock unless you're pure stock no twrp or modded boot img. The annoying message will always be there.
Swizzle82 said:
Do not relock unless you're pure stock no twrp or modded boot img. The annoying message will always be there.
Click to expand...
Click to collapse
Cool. I tried to relock and unlock. No problem. I just want the stock recovery. Do you know if this is flash able yet ?
matteosaeed said:
Cool. I tried to relock and unlock. No problem. I just want the stock recovery. Do you know if this is flash able yet ?
Click to expand...
Click to collapse
There is a new thread about how to return to stock somewhere here in the forum..
Swizzle82 said:
There is a new thread about how to return to stock somewhere here in the forum..
Click to expand...
Click to collapse
Sweet. I have been looking at the forum and everything says tarp has to be installed and running . I'll keep looking. Thank you sir .
Absolutely do not re-lock your bootloader unless you are 100% stock. If you brick the phone with a locked bootloader, you are screwed.

Booting issue -

I used Flashfire to flash a radio.img without checking flash bootloader.
I can get into the bootloader and twrp.
When wiping the device and flashing another rom or restoring a backup my 6p does not get passed the custom rom splash screen.
I was thinking of trying to fastboot flash system/data/cache of the March update and see if it boots.
I know I messed up. don't even know if it was because I didn't check the bootloader option in Flashfire. Just my guess because everything was working fine beforehand.
Any help or ideas would be welcome.
dirtyreturn said:
I used Flashfire to flash a radio.img without checking flash bootloader.
I can get into the bootloader and twrp.
When wiping the device and flashing another rom or restoring a backup my 6p does not get passed the custom rom splash screen.
I was thinking of trying to fastboot flash system/data/cache of the March update and see if it boots.
I know I messed up. don't even know if it was because I didn't check the bootloader option in Flashfire. Just my guess because everything was working fine beforehand.
Any help or ideas would be welcome.
Click to expand...
Click to collapse
Hey... You said you wiped your device? What did you wipe in TWRP?
Try to install a ROM from TWRP. Once it's over go in wipe and do a factory reset. Reboot. It should likely fix your issue.
Good luck...
5.1 said:
Hey... You said you wiped your device? What did you wipe in TWRP?
Try to install a ROM from TWRP. Once it's over go in wipe and do a factory reset. Reboot. It should likely fix your issue.
Good luck...
Click to expand...
Click to collapse
Hey thanks for the reply.
Yeah, I wiped data, system, cache. Just the standard - I still have internal storage intact.
Its just strange, I've used Flashfire before but not for flashing a radio and it worked out fine.
I am on 3.79 and used Flashfire to flash 3.78. Went to the bootloader just to check and it still shows 3.79. Just my fault . I didn't check flash bootloader in the Flashfire settings. Atleast that's what I am guessing. Things were just fine before
Sent from my LG-E980 using Tapatalk
dirtyreturn said:
Hey thanks for the reply.
Yeah, I wiped data, system, cache. Just the standard - I still have internal storage intact.
Its just strange, I've used Flashfire before but not for flashing a radio and it worked out fine.
I am on 3.79 and used Flashfire to flash 3.78. Went to the bootloader just to check and it still shows 3.79. Just my fault . I didn't check flash bootloader in the Flashfire settings. Atleast that's what I am guessing. Things were just fine before
Click to expand...
Click to collapse
Well, if nothing work, maybe backup your internal storage and flash a factory image... Then in recovery do a factory reset afterward. Who knows. Going back to stock shouldn't hurt anyway.
Good luck...
@dirtyreturn
I've used FF to flash only radio files to the modem partition many times without issue. You untick all but modem, and you untick inject SU and preserve recovery. Not sure what went wrong for you. As mentioned , you should be able to manually flash stock and if you're careful, you'll still have your data. All your settings will be reset, but the userdata will be there. You can even use flash-all.bat, but open it in a text editor and remove the "-w" flag so it will not wipe your userdata. The Google page where you get the full factory image will have instructions.
v12xke said:
@dirtyreturn
I've used FF to flash only radio files to the modem partition many times without issue. You untick all but modem, and you untick inject SU and preserve recovery. Not sure what went wrong for you. As mentioned , you should be able to manually flash stock and if you're careful, you'll still have your data. All your settings will be reset, but the userdata will be there. You can even use flash-all.bat, but open it in a text editor and remove the "-w" flag so it will not wipe your userdata. The Google page where you get the full factory image will have instructions.
Click to expand...
Click to collapse
Thanks. It was obviously my fault somehow.
I do remember there being only one option to tick.
Using fastboot back to stock did the trick and made me realize maybe I should hold off on using Flashfire for a bit.
Sent from my Nexus+6P using Tapatalk
dirtyreturn said:
Thanks. It was obviously my fault somehow.
I do remember there being only one option to tick.
Using fastboot back to stock did the trick and made me realize maybe I should hold off on using Flashfire for a bit.
Click to expand...
Click to collapse
Nah, FF is awesome and a major time-saver. Just read up on the documentation here and become familiar with it.

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