TWRP throws a footer error and signature verification failure when trying to flash the ROM.
Go to Settings > Data Usage and ensure "Background Data" is restricted for non-essential apps.
The Spreadtrum CPU runs high due to background sync. The Fix:
Here's a story based on this information: lineage14120180419unofficialgtel3g fix
Most users bypass this by using third-party camera apps like Open Camera from Google Play, though some builds may require specific proprietary blobs (drivers) to be manually pushed via ADB if you are a developer.
However, users flashing the specific frequently encounter a few critical hardware bugs. This comprehensive guide details the symptoms of these bugs and provides step-by-step instructions to apply the permanent fix. Understanding the Issue
Ensure you are using the latest compatible TWRP recovery (codenamed gtel3g or sagit ). If the error persists, you can manually edit the updater-script inside the ROM's .zip file to remove the device-check lines. Step-by-Step Installation & Troubleshooting To ensure the cleanest installation of the 20180419 build: TWRP throws a footer error and signature verification
: Many early LineageOS 14.1 builds for this device suffered from audio-video desync or freezing. Performance Optimization
To fix this, you must instruct the Android stagefright media framework to bypass the broken Marvell hardware video decoder for H.264 profiles and fallback to software decoding ( libstagefright_soft_h264dec.so ). Media Codec Configuration Modification
However, being an unofficial release from 2018, . There are no newer security patches, no official updates, and no direct developer support. The Fix: Here's a story based on this
This is a known bug in this specific build. Users have reported that after formatting the card as internal storage, the external storage is marked as “corrupted” while internal memory appears increased. Apps then fail to download, citing insufficient space despite 8GB of free “extra” memory.
Before attempting to apply any patches, ensure your device meets the following requirements to prevent data loss or a bootloop:
Return to the main menu, go to , select your lineage-14.1-20180419-UNOFFICIAL-gtel3g.zip file, and flash it.
: Navigate to Settings -> About Tablet . Tap Build Number 7 times to reveal developer options. Return to main settings, enter Developer Options , and set Root access to Apps and ADB .