I did and you won't believe I am really happy that I did it. Even I have S20 fe 5g and in one ui 4 I used to get 5.5 - 6 hours of SOT and now I am back to almost 7 hours of SOT. Feels a lot smoother, ram consumption not more than 3.3 gb ( one ui 4 never had less consumption than 4 gb) everything feels great again. Here's the link to the video. Device's differ but the process is the same. Also remember that your device will not enter the download mode as shown in the video so turn off phone , press volume up + volume down together and immediately plugin cable to ur phone , and u will be in download mode . https://youtu.be/uCu1dWd91ig . Good luck.
Last month, and there are chances of bricking if you choose a file with wrong binary code, choose CUH1 or something later than that and do exactly as the video suggests and yes I have received the One ui 4 updates official notification but I am just clicking on the update later button.
I recently acquired S20 FE 5G, more than anough for my needs. Not a gamer, browsing and a bit tweaking phone to my personal experience... I was actually doing fine with my old S7e with amazing custom Rom... a fresh flash every 6 month, and fresh as new, and **bleep** speedy. On the paper, 2020 to 2022 devices are beats (spec are insane, CPU and so on), and nothing wrong about that, when freshly out of the box.
After 2/3 days, when you start to install your apps, problems are following, crazy Ram and CPU consuption... and you say, wait that phone is supposed to be much faster than my previous phone of 2017 ?? Samsung and its boatloader are the main culpit!! Not everybody need all that, anyway... that why we are here. So yeah a dowgrade is one solution!!!
About the downgrade, their is always risk of brick, but do your homeworks before to jump into it, and everything should be fine. Their are plenty of tuto around, basically all S20 to S21 models use same procedure. I am also collecting infos, to jump into downgrade process...
Tips: you going to need to enter into Download mode. here is my technique:
Turn off the phone, wait few seconds, then connect the phone to PC, you should see charging process start, and poucentage going on, wait for it to go off (about 10 sec), and then push Vol + & Vol - together, boom into Download Mode, it asks you if you are sure, and push Vol + to confirm and upload your Rom with Odin. About brick fear, always keep on your PC last available Rom for your phone model, just in case. Downloadable with Frija or SamFirm.
