Hello,
I'm sorry if I reply here but I'm asking you why you are the oldest user of the group and I think you have the right solution to my particular problem.
I hope I'm not intrusive.
I followed all your simple guide but after the installation (via TWRP) of the stable miu12 on my little F3 the phone is back in FASTBOOT and following the restart of the TWRP (from Powershell) it tells me that I have no system.
Never happened with the many other xiaomi that I have owned.
I tried to follow other guides posted here but the Poco F3 does not install any Eu roms (even using usb-otg) and does not even start the original rom.
What do you advise me to do?
Thank you
Thats weird I use this method and the rom install ex perfectly
Only one thing be sure to do a backuo on the pc, I didn't do it and the phone's módem changes to Redmi K40 and the online back of the xiaomi account doesn't work