Signed flashable zips: These are recovery-flashable zips of the full ROM that won't overwrite your data partition. They can be flashed via stock or TWRP recovery.
OTA incremental update zips: These are recovery-flashable zips that update your rom to a newer version. They can be flashed via stock or TWRP recovery but will only work on non-rooted devices with no modifications to system files.
Note: Since OTA incremental update zips will fail on rooted devices or devices with modifications to system files, it's not possible to use these to update without reverting back to completely stock, unrooted first.
To update you must either wait for the new, full, signed flashable zip to appear (usually a few weeks after the OTA update) or use the following workaround:
- Boot into TWRP recovery
- Flash the latest full signed flashable zip
- Flash the new OTA incremental update zip
- Flash the SuperSU zip
- Reboot
The result is exactly the same as if you'd flashed the new, full rom zip.
Click to expand...