#Tips
Switching to MIUI Beta Andorid 9.0 from MIUI Stable Android 8.1 and vice-versaAndroid version upgrade/downgrade isn't possible when switching from Stable to Beta Channel and vice-versa
Both have to be on same Android Version (Stable 8.1 -> Beta 9.0 not possible)
To make the switch you need
1) Unlocked bootloader (Mandatory)
2) Flash the full rom zip either through TWRP (or)
3) Download the fastboot rom and flash through MiFlash
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