hi guys, finally i managed to flash xiaomi.eu rom on my fresh mi4c without waiting for bootloader unlock approval from that chinese site! i did: i am on latest-china-dev-6.1.21 with no root downgraded to china-stable-188.8.131.52 (via updater) flashed china-dev-6.1.7 (via updater) to get root w/o bootloader lock installed flashify apk flashed cofface twrp recovery (via flashify) left partitions 'read-only' on twrp first run installed eu-6.1.21 (via twrp) w/o any wiping now i want to perfectly clean up allthethings. i believe that twrp wipes all leftovers from 'system' anyway before flashing the rom. as for 'data', 'dalvik cache' and 'cache' - i'm going to just wipe that via twrp. the only question is how to clean up the leftovers on internal storage in easy way? currently i see next options: either wipe-all (via twrp), and flash 'eu-6.1.21' (via twrp) via otg cable or put eu-rom.zip in '/data/media/0/TWRP/' before wiping all, there is unconfirmed info that twrp doesn't clean 'media' when purges internal storage (to save the backups), so this option doesn't require otg cable let me know your thoughts, cheers!