You want downgrade from MM6.0 to 5.1 but you don't have PC to use Flashtool?
Here is your solution xD
My team Hưng Thịnh and Rain created a package for you to downgrade with TWRP
All you need are TransferPackage and a 5.1 ROM
Here is link:
-Package: Package download
-ROM: You choose one of that: Download
HOW TO USE: (PLEASE READ IT)
- Download 2 files above
- Reboot to recovery, wipe system, data, cache and install "MM-to-LP-Transfer.zip"
- Reboot to recovery again
- Install ROM then reboot device
Thanks to @HungThinh