Originally Posted by pulser_g2
This update is quite interesting actually
is the updater-script.
The only "main" check here is that you're not downgrading the version of the firmware, via a ro.build.date.utc, and that the device being flashed is a C6806.
Asides from that, it's a regular full install to the device.
The only "patch" file is recovery-from-boot.p, which will only update the recovery if it needs done. This seems to be designed to prevent a downgrade of recovery (you can't downgrade it if the zip always tries a binary patch on it).
Can't wait for this to become available on non-GPE ultra!
Current Phone: Lumia 1520 Black
Current Rom: Windows Black
Current Kernel: Stock
Previous Phones: P900, E71, E72, 5800, BB9300, BB9380, BB9780, BB9360, Sony Live W/ Walkman, HTC Mozart, Nexus S, HTC One V, Galaxy Nexus, Xperia Ion, Samsung Galaxy Note 3, Xperia Z Ultra C6833 Black, Nexus 5 White, Nexus 5 Black, Xperia Z Ultra White, Lumia 1520 White