Flashing it required the usual ritual: unlock bootloader, install TWRP, wipe everything, sideload the zip. At just ~280MB, the ROM was lean.
This appears to be a filename or build identifier for an ROM (based on Android 7.1.2 Nougat), built on April 19, 2018 , for a device codenamed gtel3g . lineage14120180419unofficialgtel3g
If you have this file sitting in your archives, it might be worth keeping purely for nostalgia—but for daily use, it's time to upgrade to a newer ROM or a newer tablet. Flashing it required the usual ritual: unlock bootloader,
installed (e.g., TWRP 3.5.2 or later recommended for gtel3g). In recovery, perform a Factory Reset and wipe Cache/Dalvik. Flash the ROM zip: lineage-14.1-20180419-UNOFFICIAL-gtel3g.zip (Optional) Flash (ARM, 7.1, Pico/Nano recommended). Initial boot may take up to 10 minutes. Download Links: If you have this file sitting in your
: On some 3G variants, you may need to toggle Airplane Mode once after boot to initialize the cellular radio.
: A common critical bug in builds for this device (including newer ports like /e/OS Oreo) is that the camera may not work General Performance