After recovery of bricked phone in Xiaomi service, again downloaded xiaomi.eu_multi_MI11Pro_MI11Ultra_V12.0.10.0.RKACNXM_v12-11-fastboot.zip, flashed Chinese V12.0.10.0 RKACNXM stable, working perfectly...
After hours of work on my Xiaomi Mi 11 Ultra - and with no result to go out of Fastboot, I went to Xiaomi service this morning, now I am back to original Chinese MIUI 12.0.10 stable. Well, service spent 3 hours on my nice phone, unfortunately I could not see what they did.
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Originally installed V12.0.10.0 RKACNXM Chinese version, flashed with xiaomi.eu_multi_MI11Pro_MI11Ultra_V12.0.10.0.RKACNXM_v12-11-fastboot.zip.
Flashing with original China ROM ending with error, phone still in Fastboot
Hello ingbrzy, I have the same problem, I am in bootloop, for a moment Mi logo, than stuck in fastboot, I can't go to recovery. First flashing ended with "Seting current slot to 'a'", second attempt ended with "Erasing 'metada' "