With my F2, I simply updated using the updater, entered twrp without problems, flashed the rom and restarted without problems. I restarted to try out the new twrp and blocked it in the Poco logo. It simply did not restart or enter twrp. I went on fastboot, tried boot command, flash twrp, new and old and it always gave error. .
I don't know how, when pressing the 3, power + vol+ + vol-, keys at the same time, a green menu appeared in Chinese that I never saw, and luckily when pressing several buttons it started up for the system. One of the buttons was for Wi-Fi selection.
It's working right now, but I'm afraid to restart and lock itvagain. I didn't want to install the official again and start all over again
Regards to all