Make Sure You have Rooted if Not Download twrp root toolkit for BL5000 and Bl7000 here https://androidfilehost.com/?w=files&flid=216782
Based on Stock
OS 7.0XX
Instruction.
1. Must create a nandroid backup to recover bootloop
2. Do a factory Reset.
3. Flash Clean ROM From the Patches Folder. the Script will Remove all core apps including Gapps From Your ROM. [if the Script unable to Remove Some app Like launcher then you need to mannuly Remove it.
4. Flash Latest build. from Latest build Folder
5. if you want to Boost visual Quality flash [Xn visual.zip from patches folder]
6. if you want to boost sound quality Flash XN sound.zip from patches folder
7. then Flash XN Speed.zip from Patches folder, flash Gapps if you Like
8. Reboot system Now.
if You want to switch ui From ZENUI to Sense UI You can do with this ROM.
How to-
1. Go to System priv app and disable all Asus app
2. then Download and Install htc app from play store [ Don't worry Your ROM is compitible for this]
3. Convert all to system app using any Root explorer.
4. htc camera not work in System so keep it external app.
5. Done.
bug- non