Question How to update with Odin but keep root and decryption. - Samsung Galaxy S21 Ultra

So the thread title says it all. For some reason whenever I update with odin, even choosing home_csc, the phone still gets corrupted and I forced to do a complete factory reset and clean install. It's incredibly annoying. I just want to dirty flash and keep root/decryption, twrp.
Is this even possible, and if so, what are the exact steps to do it?

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[Q] stuck in broken recovery mode

Hi everyone
First of all a little history:I used this [PhilZ-cwm6][n7000] v4.93.6 Safe Stock Kernel+CWM6+Root+exFAT+ext4-LT4 to root my n7000 on 4.0.4 (I bought it with 4.0.4).
Then after some time Android wanted an upgrade to 4.1.2 and after some time I just tried it and it failed after booting into recovery mode, because it didnt find a the expected kernel, I think. But I had the chance to boot up again.
OK I then did the update with Kies-Software and everything worked again. Then I rooted the phone again using the same method as mentioned in the post above.
Now today the phone wanted to update again, I thought, OK, if it didnt fail completely the first time, it will fail in recovery mode and let me boot up again.
But...
This time it went into recovery mode and didnt let me boot up again. It just shows the robot with the crystal and the progress bar seems to move a little but then the screen goes black for a second and the robot returns and the progress bar moves a little and the same again.... I dont get into the recovery menu.
I tried samsung kies emergency recovery, it doesnt find my n7000.
I tried to flash the kernel with a newer version from the post above. (I am not allowed to post there). No change it gets stuck in broken recovery mode.
I can push volumedown power and home to get into the download mode.
My question is what can I do?
Is there any other chance to avoid a complete stock recovery (is that the right term/way)?
What do I have to flash and how?
I am a little worried about the brick issues and I dont know which version I have to flash to set it back completely...
Please help & thanks
drz
No worries, since your download mode is still working you can flash a stock Samsung ROM via odin. Download one from here and flash it in odin while in download mode. Latest at this point of time is LT4 http://forum.xda-developers.com/showthread.php?t=1424997
This will give you the stock JB Bootloader, Recovery, and ROM. Its completely unrooted though, and the phone will not be wiped in the process, so remember to do so after you flashed it.
cr0wnest said:
No worries, since your download mode is still working you can flash a stock Samsung ROM via odin. Download one from here and flash it in odin while in download mode. Latest at this point of time is LT4 http://forum.xda-developers.com/showthread.php?t=1424997
This will give you the stock JB Bootloader, Recovery, and ROM. Its completely unrooted though, and the phone will not be wiped in the process, so remember to do so after you flashed it.
Click to expand...
Click to collapse
Thanks a lot, crownest!
I sweated a bucket of blood and seat, because I couldnt wipe cache and data first, but it worked!!!
Everything looks like before!´the update!
Some more questions (sorry):
do you think I should wipe cache and data now?
Is a stock rom like the rom on internal usbcard only?
What about the update? Can I update safely now?
Thanks again for helping...
greetz
drz
Yup you should be able to wipe cache and dalvik with no issues now.
I believe all ROMs be it stock or custom installs to the NAND memory (Someone correct me if im wrong) and never on your internal/external SDcard
As for OTA updates via Kies, I dont see why not, but if the same issue does reoccur again then my suspicions would point to a possible NAND corruption on the device. Not sure if there is a fix for that, but its a risk you gotta take. Or you can always root the phone and flash custom ROMs as new builds get released, this way you'll never have to use OTA updates again.

Hard Brick?

I was trying to change roms, and I during Rom installation it just rebooted, first that has ever happened. I shrug it off, then play store starts messing up, so I try to Odin, and for whatever reason it decided to reboot that as well, so now I'm stuck in a boot loop. Suggestions, help, anything at all please......
It was booting up as if it was going into recovery, then just turning off, and repeating the process. How I was able to fix this was instead of trying the full firmware Odin I used this link:
http://forum.xda-developers.com/not...mware-firmware-kernel-modem-recovery-t2902574
And used partial, that worked. Now any ideas about it interrupting recovery?
What firmware are you on ? And when you Odin did you use latest firmware ruu
---------- Post added at 12:32 AM ---------- Previous post was at 12:31 AM ----------
Try wiping all except ext SD then wipe dalv and cache then reboot
I did not use an ruu, just the cfroot. At that point my recovery, rebooted and tried to continue while it was installing supersu. It did that multiple times before I knew something was wrong, after awhile I used the partial tar from NK4. Now the play store it force closes when trying to download, and gives me rpc-7 aec 7, then I follow the steps, removing the account etc.... but it does not work. On top of that recovery still kicks me into reboot while I'm trying to install something.
Try pulling the battery, then do a full wipe and then try flashing firmware again.
Sent from my SM-N910T using XDA Free mobile app
The problem is Recovery is rejecting everything I try to install, well everything big, I go in to flash a rom and during the installation it literally reboots to the system. That's what happened during full firmware flash odin. I tried to also use flashify to revert to stock, same the recovery green android shows up, but kicks me out anything but a partial flash does not work. Now I'm trying to Odin full stock, and its halfway through.
chris0160 said:
The problem is Recovery is rejecting everything I try to install, well everything big, I go in to flash a rom and during the installation it literally reboots to the system. That's what happened during full firmware flash odin.
Click to expand...
Click to collapse
Start over. Go back and grab the files to flash in Odin. Make sure you got good downloads. Flash back to stock, then re root.
Also did you get the bootloader unlocked before you tried to flash recovery. You may want to run that processes again as well.
Somewhere in your process you got a bad flash. Most likely it is either while you unlocked the bootloader, or when you flashed recovery.
If you don't want to start completely over you can try flashing your recovery again in ODIN. It might be the best place to start.
Sent from my SM-N910T using XDA Free mobile app
Successfully flashed stock odin, or so i thought..... Its now stuck in a bootloop from the samsung screen to being able to wipe to get into the phone then reboots. Then went into recovery to wipe. For whatever reason that worked. So far so good, Its finally not rebooting during recovery. I guess I just needed to revert to stock.

After installing stock firmware, problem still persists...

The problem I'm having originally started when I attempted to install a marshmallow global port rom on my g4. For some reason even after doing a clean install the rom was buggy, screen would become unresponsive, and apps would consistently crash. I attempted every possible option from recovery. Wipe, install several different roms, restored nandroid backup (unresponsive screen issues still persisted). Finally, I decided to restore stock firmware with a complete wipe of the phone via kdz. However somehow the system instability persists. An error will pop up saying "Process system isn't responding. Do you want to close it?" So now I have no custom recovery and have a hard time even getting to the settings menu to enable usb debugging. I'm stumped and what I should do....
motojdm said:
The problem I'm having originally started when I attempted to install a marshmallow global port rom on my g4. For some reason even after doing a clean install the rom was buggy, screen would become unresponsive, and apps would consistently crash. I attempted every possible option from recovery. Wipe, install several different roms, restored nandroid backup (unresponsive screen issues still persisted). Finally, I decided to restore stock firmware with a complete wipe of the phone via kdz. However somehow the system instability persists. An error will pop up saying "Process system isn't responding. Do you want to close it?" So now I have no custom recovery and have a hard time even getting to the settings menu to enable usb debugging. I'm stumped and what I should do....
Click to expand...
Click to collapse
Can you get to Download mode? If so you can flash this rooted, stockk 81110N img and once it is in, you can use Flashify to flash twrp.
http://forum.xda-developers.com/tmobile-g4/development/h81110n-stock-rooted-image-t3191038
Barsky said:
Can you get to Download mode? If so you can flash this rooted, stockk 81110N img and once it is in, you can use Flashify to flash twrp.
http://forum.xda-developers.com/tmobile-g4/development/h81110n-stock-rooted-image-t3191038
Click to expand...
Click to collapse
I managed to reinstall twrp and root. However, installing different roms whether it be stock or otherwise does not resolve the issue. I'm absolutely boggled how this issue can persist across flashes. I'm hesitant to call it a hardware problem because the phone is mint and there was no physical damage/shock done to the phone right prior to the issues occuring.

Decrypt N910T T-Mobile 6.0.1 Marshmallow, Stock N910TUVU2EPE3?

I did an Odin install of MM for the 910T stock rom and unfortunately tried the encryption. I thought it would give me the option to decrypt, but that is not the case.
I was able to root after the encryption using the method here:
Root/Recovery (http://forum.xda-developers.com/not...overy-n910t-t3-marshmallow-pe3-guide-t3406870)
Xposed (http://forum.xda-developers.com/note-4-tmobile/general/pe3-xposed-n910t-t3-marshmallow-t3406950)
What I want to do is go back to an un-encrypted state.
What is safe to wipe using TWRP?
I know nothing aboit encryption but......First thing I would try is odin again and start over.
noob4598 said:
I know nothing aboit encryption but......First thing I would try is odin again and start over.
Click to expand...
Click to collapse
That is the intention, tried a reset but the encryption was still there and I used an Odin install yet nothing was changed or altered when I rebooted.
What I need to know is what can be safely wiped in the advanced wipe in TWRP.
Everything. Twrp might be able to decrypt. But u should be able to factory reset and then odin restore all.

Help please

I've just tried to factory reset my N950F, that had custom rom. This didn't remove my media files for some reason, so I did a full wipe from TWRP.
This has sent me into a bootloop, however I can still get into the download screen for odin. I've tried flashing TWRP again with this but while my laptop says pass it is stuck on 'Downloading, do not turn off target'.
I'm now waiting to download https://www.sammobile.com/firmwares/galaxy-note8/SM-N950F/BTU/download/N950FXXU5DSB2/259437/ am I doing something wrong or do I have to return to stock in order to use the phone again?
Would rather have TWRP and install a custom ROM.
Thanks all,
Andy
Download firmware, flash it with Odin run wait till device turn on, wait some time. Then just simply flash your ROM, root and stuff

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