Upgrade From Miui 6 To 8 - Mi3w

[Deleted member 163612]

I was not into MIUI/Xiaomi stuff for quite some time and now a friend of mine wants her Mi3W updated from
MIUI 6 (5.6.xx weekly from decuro.de - very old and outdated) to MIUI 8 xiaomi.eu stable.

I do a backup and just flash or do I need to flash a fastboot ROM first or anything else? What about bootloader locking? Is there anything that would need to be mentioned?

 

[Pertti Kosunen]

Partitions need merging so MiFlash is fastest way. Cancro should not get locked. Backup everything before flashing.

 

[jc rey]

I was not into MIUI/Xiaomi stuff for quite some time and now a friend of mine wants her Mi3W updated from
MIUI 6 (5.6.xx weekly from decuro.de - very old and outdated) to MIUI 8 xiaomi.eu stable.

I do a backup and just flash or do I need to flash a fastboot ROM first or anything else? What about bootloader locking? Is there anything that would need to be mentioned?

miflash official global rom first, best for merge partitions.
then for xiaomi.eu, install twrp and install rom from twrp.

 

[Deleted member 163612]

Thanks fellas.