Please kindly read below details before your install v1.7 Marshmallow
1) System version:
Only v3.8 can upgrade to Marshmallow. Other versions need to first update to v3.8.
P.S. European Software is not compatible with this update.
2) Available space:
2GB at least is needed to download and install the update.
at least 50%.
A. make sure your phone is unrooted
B. backup all data before installing as the update will clear your entire phone’s data
C. remove your SD Card before you install it
5) How to update:
A. Download the local update file to the internal storage
B. Use local update for flashing Marshmallow
The entire installation process will take 20 minutes.
7) Download Link
Link1: Flash 2 Local Update File
8) Change Logs
---> update the system to Marshmallow
---> update Android security patch level
---> new quick shortcuts in status bar
---> turbo download
---> voice unlock screen
---> improve battery consumption
---> clear all feature in multi-task screen
---> improve experience on chorme
---> app permission management
---> search bar for quickly searching apps
---> revise the notification light logic: when the screen is on, the light will not blink as is regarded as users has noticed the unread message and notification
---> not support to access OTG file in file manager, requested by Marshmallow. But you can use 3rd party file manager to solve
---> not support to install apps to sd card as requested by Marshmallow
---> provide more photo sizes in camera
---> volume up/down will work as zoom in/out when taking photos
---> volume down will work as shutter key for selfie
---> add slow motion feature
---> able to turn off camera shutter sound
---> remove Track Mode, Multi-Angle Mode, Live Photo Mode as they are not supported on Marshmallow
Warning again: v3.8 only! Unrooted, Backup Data, Remove SD Card!!! and Not for European Software!!!
Indonesia end users please noted local service is closed due to the holiday. Please try after holiday end.
If you local update doesn't work for your phone, you can try to use flashtool. Here is the guidance: