Hi Guys,
Yesterday i wanted to enable my company email in my Samsung S4 at&t (SGH-I337) mobile. It said, it has to encrypt the mobile to enable email.
I said "Yes", for that. Then after the reboot it said it failed to encrypt the device, and asked me to reset the phone. After i reset the phone it started asking for encryption password... Even if i give the correct password it was not accepting the password. After "Nine" attempts, it said it is going to erase the phone to factor defaults, and rebooted the phone. After the reboot it is still asking for the password, but the moment i enter the password it will reboot.
Finally i decided to write the stock ROM using the odin. Then i downloaded "AP_I337UCUEMK2_1921628_REV06_user_low_ship_MULTI_CERT.tar.md5" from the web. After few attempts i was able to write this ROM on the flash.... but when i try to boot this it says "Device memory damaged" + "The data partition has been corrupted. You need to reset your device to factory defaults....".. I tried to format the data partition from recovery multiple times, but it is of no help.
Anybody has any idea on why the device thinks the data partition is corrupted?
I know nothing about how to solve encryption issues. I'm not sure why you have the data partition issue, but I have a guess. You didn't say what version of the OS you were on before you tried to flash the MK2 stock firmware, but if you were on a later version and later bootloader, then you may have a bootloader incompatibility. If your phone was already on 4.4.2 or 4.4.4 or 5.0.1, then you couldn't go back to MK2. I think you should flash stock NB1 and see if that solves the problem. You can get everything you need here.
Many corporate IT security policies including mine at work are requiring that all devices used for work, i.e. BYOD, must be encrypted. I prefer my device to be rooted…and control my device to my liking. There’s a problem though… it’s not easy encrypting with root present. I set out on a mission to get it working.
There is very little information about encrypting Galaxy S6 devices (or any Galaxy for that matter) with root. I've tried numerous methods around the web and here on XDA but none worked with any of the current ROMs. I spent several days researching, investigating, and testing various methods before finding a solution that works.
Although not required, I started a fresh start—flashed the official Marshmallow stock ROM for my device (SM-G920i) and in the process wipe my device completely, including formatting the data partition and wiping the internal SD.
I previously had Lollipop installed with custom ROM. A nandroid was performed, ran TiBu then copied all the contents of the internal memory on my laptop prior to going to official stock. Can never be too careful.
The steps outlined below was tested on both ALEXIS ROM 5.0 and XtreStoLite 3.3.1 ROMs using the G920i unlocked variant. It may work on other international variants.
Flash stock Marshmallow ROM through Odin in ‘AP’ with AutoReboot and NAND Erase checked (from Odin v3.11.1 options)
Flash CF-AutoRoot via ODIN [let it auto-reboot when complete]
Flash TWRP 3.0.2-1 via ODIN [disable auto-reboot in ODIN options]
Reboot into TWRP recovery
Perform factory reset then format Data partition
Reboot TWRP recovery so that the Data partition is refreshed
Copy custom ROM and other flash files you’ll be using to /sdcard/ using ADB Push command. For example o adb push Rom.zip /sdcard/tools.
Flash custom ROM then reboot
Be patient—reboot will take about 5 minutes
Power off then boot into TWRP again to perform a factory reset and wipe Delvic cache
Reboot - wait patiently as boot will take several minutes
When the system finally boots up go through the first start wizard then go into setting to set up pin and fingerprints you wish to use
Encrypt phone -- this will take a while before it's complete. Be patient; the device will reboot several times, ask for password at boot-up then boot into the finally into the system.
The phone is now encrypted. Because we performed a factory reset, root and TWRP recovery were removed. We now have to flash CF-autoroot and TWRP recovery via Odin. Again, patience is required--it'll take about 5-10 minutes for the boot to complete.
Note that TWRP does not know how to decrypt Samsung encryption and therefore it can't read the /data/ partition. That partition will either have to be formatted before flashing a new ROM or removing encryption. Now I did not test removing the encryption, but I’d suggest that you have current backups of your device prior to performing that task.
I hope this helps anyone experiencing this issue.
Seems to me, that if they want the device encrypted, they would also prohibit root, it is a security risk.
So is there any chance to update an encrypted Rom via TWRP?
Good walkthrough.
I did also some research and i found on some other forums the opinion, that a full-disk-encryption on a rooted phone make not much sense,
where you can replace/install the custom recovery and decrpt the data with some adb commands? Is that true?
Confusing.
tefole said:
Good walkthrough.
I did also some research and i found on some other forums the opinion, that a full-disk-encryption on a rooted phone make not much sense,
where you can replace/install the custom recovery and decrpt the data with some adb commands? Is that true?
Confusing.
Click to expand...
Click to collapse
twrp do don't support samsung decryption, so encrypted data can be only deleted. but, if you enable reactivation lock, then, you can't flash in recovery, so stolen phone is like brick
BUT with custom rom (TyrannusRom and note 7 port) encrypted phone do not boot (boot loop), so there I finished my work with encryption
paulyz said:
twrp do don't support samsung decryption, so encrypted data can be only deleted. but, if you enable reactivation lock, then, you can't flash in recovery, so stolen phone is like brick
Click to expand...
Click to collapse
I see.
I believe, that i can live without the ability that TWRP doenst decrypt the /data and the /sdcard partition,
if I can run with a CFW, and if the phone is rooted and encrypted.
After i put the CFW on the phone, even I need TWRP anymore. Usually i try to dont change the CFW so frequently.
With reactivation look you mention the "OEM unlock" in the Android\developer settings I guess?
Is the flashing really locked, like brick, really? If you can't flash in recovery, but how to restore a stock firmware with odin? Isnt it the same?
I didnt get that
tefole said:
I see.
I believe, that i can live without the ability that TWRP doenst decrypt the /data and the /sdcard partition,
if I can run with a CFW, and if the phone is rooted and encrypted.
After i put the CFW on the phone, even I need TWRP anymore. Usually i try to dont change the CFW so frequently.
With reactivation look you mention the "OEM unlock" in the Android\developer settings I guess?
Is the flashing really locked, like brick, really? If you can't flash in recovery, but how to restore a stock firmware with odin? Isnt it the same?
I didnt get that
Click to expand...
Click to collapse
"Reactivation lock lets you use your Samsung account to prevent others from activating your device if it's ever lost or stolen. With Reactivation lock turned on, you will be required to enter your Samsung account credentials prior to performing a factory reset on the device. Your Samsung account login should be something you can easily remember."
when RL activated, you can't flash, you always get error.
One big problem, what after encryption you can't update ROM, change or update kernel and etc.
I see., thx for the infos.
I did some research as well. With activated RL you can go only in download mode and install stock with Odin.
But the phone is going to ask you for your samsung account credentials - anyway.
tefole said:
I see., thx for the infos.
I did some research as well. With activated RL you can go only in download mode and install stock with Odin.
But the phone is going to ask you for your samsung account credentials - anyway.
Click to expand...
Click to collapse
if you will find useful information, post, because, I very interested too, just do not have a lot time to play with this.
The topic should be SM-A300H can't encrypt. The other issue I solved.
So this is my issue: Encryption doesn't install correctly. I am using lollipop.
After choosing encrypt my device in settings/security it reboots, and shows the green android symbol, but nothing more happens. It shows the green android character for about 15 seconds, and then it boots as usual without encrypting the system.
I did a wipe with TWRP 3.0.2-1-ashyx because of the encryption problem, I wanted to try out with a fresh install and see if it was possible to encrypt the system but it did not make a difference.
I had rooted the device with Kingroot before the wipe, and kingroot was still installed even after doing the wipe which is odd. I tried uninstalling kingroot after the wipe as well but encrypt still didn't work, same problem.
So if there's a solution to this problem I would be grateful if you can help me.
Additional question: in case I cannot get encryption to work for some yet unknown reason, is there any 3rd party app I can try that will encrypt the entire system? I am not looking to encrypt single files, only full system encryption is good enough.
*deleted*
Flash the stock firmware then boot to recovery and factory reset.
You should then be able to encrypt.
Be forewarned that if you do encrypt you will no longer be able to mount data or storage in twrp.
I have a One Plus 6t international version rooted through Magisk. I was debloating some One Plus system apps this morning and removed something I shouldn't have.... now the reboot gets stuck on the loading screen, then boots into TWRP recovery. I'm trying to restore from backup but everything is encrypted and TWRP isn't asking me for a password to decrypt.
I don't have a pin or anything set on the phone at the moment
Tried the twrp decrypt <pin> command with the default password but it just says 'Failed to decrypt data'.
Anything I'm missing here or do I just to reformat and give up on the encrypted data?
devianaviator said:
I have a One Plus 6t international version rooted through Magisk. I was debloating some One Plus system apps this morning and removed something I shouldn't have.... now the reboot gets stuck on the loading screen, then boots into TWRP recovery. I'm trying to restore from backup but everything is encrypted and TWRP isn't asking me for a password to decrypt.
I don't have a pin or anything set on the phone at the moment
Tried the twrp decrypt <pin> command with the default password but it just says 'Failed to decrypt data'.
Anything I'm missing here or do I just to reformat and give up on the encrypted data?
Click to expand...
Click to collapse
Managed to decrypt the files by installing a different version of TWRP: https://forum.xda-developers.com/on...overy-unofficial-twrp-touch-recovery-t3861482
Turns out I did not bother to do any backups...
Can copy all of the pictures and documents out though which was what I was primarily after.
I've used substratum theme but my phone went completely black after reboot. Trying to remove substratum I've used Wondershare MobileGo (I know it was a mistake but it popped up as a first solution I've found on reddit). It obviously didn't work, so I've proceeded to make factory reset in TWRP. This didn't work. When I reboot I'm stuck with TWRP. If I perform hard reset I'm able to go past that using twrp and rebooting the system but I got this message: Decryption unsuccessful The password you entered is correct, but unfortunately your data is corrupt. I'm thinking about flashing stock rom again (should I use twrp or LGUP?) or should I try one more option?