I have a phone that is bootlooping after a power failure + battery depletion during system encryption. How it got bricked isn't important here, the trouble is that I can't get into the recovery mode. Usually turning on the phone¹ via Volume Up+Power will enter recovery mode. I had TWRP flashed as the recovery and Lineage OS as the ROM. Now it does not respond to that keystroke.
Also generally one could boot to the system and run
adb boot recovery, but with the system not booting that is not an option. I can however use Volume Down+Power to enter fastboot mode. I've tried reflashing the recovery image from fastboot, but it still does not respond to the key sequence. Using
fastboot reboot tries to boot to the system. How can I get into recovery mode?
¹ In my case, a Levovo K6 Note/ K53a48 (karatep), but not really relevant to this question.