[Nubia Red Magic 3 Questions & Answers] thel'vadam:
I USED CHINESE 2.30 version rom and few others as well. NOTHING HAPPENED

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot oem nubia_unlock NUBIA_NX629J

...

(bootloader) START update nubia fastboot unlock flag!!!

(bootloader) set state to 1 ok!!!

OKAY [ 0.010s]

finished. total time: 0.010s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase modem

erasing 'modem'...

OKAY [ 0.013s]

finished. total time: 0.014s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot erase system

******** Did you mean to fastboot format this ext4 partition?

erasing 'system'...

OKAY [ 0.025s]

finished. total time: 0.027s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash vbmeta.img

unknown partition 'vbmeta.img'

error: cannot determine image filename for 'vbmeta.img'

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash system vbmeta.img

target reported max download size of 805306368 bytes

erasing 'system'...

OKAY [ 0.024s]

sending 'system' (8 KB)...

OKAY [ 0.014s]

writing 'system'...

OKAY [ 0.003s]

finished. total time: 0.044s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash dsp dspso.bin

target reported max download size of 805306368 bytes

sending 'dsp' (65536 KB)...

OKAY [ 1.418s]

writing 'dsp'...

OKAY [ 0.286s]

finished. total time: 1.708s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash splash splash.img

target reported max download size of 805306368 bytes

sending 'splash' (7419 KB)...

OKAY [ 0.169s]

writing 'splash'...

OKAY [ 0.029s]

finished. total time: 0.198s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash modem NON-HLOS.bin

target reported max download size of 805306368 bytes

sending 'modem' (144196 KB)...

OKAY [ 3.129s]

writing 'modem'...

OKAY [ 0.513s]

finished. total time: 3.645s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash boot boot.img

target reported max download size of 805306368 bytes

sending 'boot' (98304 KB)...

OKAY [ 2.721s]

writing 'boot'...

OKAY [ 0.427s]

finished. total time: 3.150s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash system dtbo.img

target reported max download size of 805306368 bytes

erasing 'system'...

OKAY [ 0.027s]

sending 'system' (8192 KB)...

OKAY [ 0.189s]

writing 'system'...

OKAY [ 0.070s]

finished. total time: 0.290s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash system system.img

target reported max download size of 805306368 bytes

Invalid sparse file format at header magic

erasing 'system'...

OKAY [ 0.028s]

sending sparse 'system' 1/5 (778291 KB)...

OKAY [ 23.300s]

writing 'system' 1/5...

OKAY [ 0.002s]

sending sparse 'system' 2/5 (697207 KB)...

OKAY [ 25.158s]

writing 'system' 2/5...

OKAY [ 0.002s]

sending sparse 'system' 3/5 (752301 KB)...

OKAY [ 24.818s]

writing 'system' 3/5...

OKAY [ 0.003s]

sending sparse 'system' 4/5 (782303 KB)...

OKAY [ 31.269s]

writing 'system' 4/5...

OKAY [ 0.003s]

sending sparse 'system' 5/5 (723054 KB)...

OKAY [ 30.828s]

writing 'system' 5/5...

OKAY [ 0.002s]

finished. total time: 135.424s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot flash recovery recovery.img

target reported max download size of 805306368 bytes

sending 'recovery' (98304 KB)...

OKAY [ 2.593s]

writing 'recovery'...

OKAY [ 0.479s]

finished. total time: 3.074s

C:\Program Files (x86)\Minimal ADB and Fastboot>fastboot reboot

rebooting...

finished. total time: 0.003s

C:\Program Files (x86)\Minimal ADB and Fastboot>

KINDLY TELL ME IF I MISSED SOMETHING