Help - one UI 5 constantly freezing & restarting on SM-G780G DS

[[Lemmy]]

Help - my S20FE is driving me to the point where I'll reactivate my 15 year old nokia...

Here's what I have:
S20FE (german t-mobile, SM-G780G DS), latest OS image (G780GXXU3DVK5), rooted with the latest Magisk version.

What I'm experiencing: the UI freezes up, then eventually restarts, every 5 to 10 minutes. Visually the only indication that it's not an actual reboot is the fact that it goes directly to the screen that only has "SAMSUNG" on it, without the screen with the "bootloader is unlocked" warning that you'd normally see first.

I'm pretty sure it is not a hardware issue, when it first started I did a full wipe / reflash, and then the phone worked fine for about a week or two, now it's doing it again.

Is there ANY way to actually see WHAT is crashing, and maybe even why? I already wiped the cache of that oneUI, and the whole cache from recovery, that did not help.

 

[[Lemmy]]

I guess I'm the only one here who has a S20FE.

 

[kaliko1991]

Hi, did you manage to solve the issue? I'm currently on Android 11 One UI 3.1 but thinking about updating but I want to know everything first. I was reading that you can update without loosing root but I want to know that is safe first.

 

[[Lemmy]]

I am not completely sure yet but I believe I have it narrowed down to two apps.
I actually went back to the previous major version which was a pain all in itself, it's not easy to find downloads for older Samsung images... anyway, I am back on Android 12, and one UI 4.1, when the crashes start again....


eventually, I uninstalled greenify and kde-connect and the crashes have stopped so far.

 

[[Lemmy]]

Hi, did you manage to solve the issue? I'm currently on Android 11 One UI 3.1 but thinking about updating but I want to know everything first. I was reading that you can update without loosing root but I want to know that is safe first.

I have done updates w/o loosing root or data on magisk-rooted samsung devices, but it is a manual process.

1. use samfirm or frija to get the latest rom image zipfile for your device
2. unpack the firmware zip, you'll get 5 image files.
3. update the magisk app on your device
4. out of the 5 files from the firmware zip, copy the one that starts with AP_ to your device
5. use the magisk app on your device to apply magisk to that file
6. copy the file resulting in that patch back to your computer

up to here the process is the same as the initial install of magisk on a samsung, minus the unlocking of the bootloader.

7. get your device into download mode, and use odin to flash all four parts (BL, CP, AP, and this is important HOME_CSC). by flashing HOME_CSC instead of CSC into the appropriate slot you retain all user data!!

So far this was worked for me on a Tab S2, and a S20fe. Haven't tried on any other yet. YMMV.

 

[kaliko1991]

I did everything just as described and I'm currently with a boot loop and eventually boots into stock recovery and ask me to do a factory reset. I guess it's over then, I'm loosing all my data.