So, I recently thought about rooting my Lenovo Tab M10 (according to the TWRP site, TB-X605F), so I flashed the latest version of TWRP to my tablet from fastboot, and realised: "Oh. I can't boot recovery on this." Holding power+volume down brings me to fastboot again, as expected. Power+volume up shows a weird "FFBM Mode" message in what looks to be the Arial font, centred on screen, on a grey background. Holding power and both volume buttons boots as if i was just holding power. I have no idea what to do. None of the
fastboot boot commands exist on my tablet, nor do some of the
fastboot oem commands. I am running Android 9.0 Pie on my tablet, and Linux Mint on my PC, using the
fastboot packages if that would help.
UPDATE: I managed to (accidentally) find out that if I boot to android, then hold power, volume up, and volume down at the same time until it turns off, then release power as the Lenovo logo appears, I can boot the stock recovery. However, I need to flash TWRP, and then boot it before booting android so it doesn't get overwritten. I still have no answers, but at least I know I can actually boot recovery mode.