I have a LG K51 Boost mobile Android 11. Stuck in boot loop. soft brick? I believe they call it. gets to boost mobile sign and back to start. just powers on and off.. It says it's currently # k500um30c firmware.. I can't find this firmware anywhere! which one is ok to use? there are quite a few! I have found a K500um20F that's android 11 as well.. but having issues flashing it on LG UP. I get a 0x2000 error with flash fail at 9% everytime. please help me!