[Q] Tried to root Korean SM-P900; now stuck in reboot loop
I have a Korean SM-P900 that I tried to root with CF AutoRoot using Heimdall. I identified the recovery and cache partitions using print-pit, then flashed the recovery.img and cache.img to their respective partitions. After that it started booting, and was stuck at the Samsung screen for several minutes.
I then rebooted it by holding down the power button. When it was booting back up, it showed a message in Korean and with a counter that counted up to 79, then showed a similar message counting up to another number. It kept doing that no matter what, never booting up, even if I rebooted it again.
After that I tried flashing it again the same way. Now it shows the same message as earlier, but actually boots into the Samsung initial setup screen. However, I can't get past it, because a message showing "MyScript ResourceManager", followed by some Korean text, blocks me from doing anything, and if I hit okay it just reappears.
Any ideas on how to unbrick it?