partial bootloader-unlock-custom-rom phone Xiaomi mi439 M1903C3EC, M1903C3EE, M1903C3EG, M1903C3EH, M1903C3EI, M1903C3ET, pine, Redmi 7A, Xiaomi Redmi 7A M1903C3ECM1903C3EEM1903C3EGM1903C3EHM1903C3EIM1903C3ETpineRedmi 7AXiaomi Redmi 7A
Difficulty
Moderate
Brick risk
Medium
Legal risk
Low
Not stock root. Needs an unlocked bootloader and a custom ROM.
How-to
Notes
LineageOS Mi439 and TWRP SDM439 name Redmi 7A (pine) explicitly. Redmi 8 / 8A / 8A Dual are separate listings on the same unified tree.
TWRP builds for this device are based on LineageOS device trees.
LineageOS 19.1, 20, and 21 are available. Install with fastboot.
SourcesLast verified Oct 31, 2026
- https://wiki.lineageos.org/devices/Mi439/ wiki.lineageos.org
- https://twrp.me/xiaomi/xiaomi-mi439.html twrp.me
- https://github.com/AOSPA/ota/blob/master/updates/mi439 github.com
