Thanks to the effort of Wiko Mobile Indonesia, you can now manually upgrade your phone.
In this upgrade, you will need a PC (Windows 7 OS and below is recommended), USB Cable, and the unit itself.
- Download this one.
Click it to download.
- Extract the compressed file.
- Run RAINBOW_5.0_ID_V04.exe
- Click "Download"
- Turn ON "USB Debugging" at the Developer Options of your phone
- Turn OFF your phone
- Connect your phone via USB Cable to your PC
- Wait until finished
Screenshots:
Sad to say, Wiko Rainbow 4GB variants has a storage bug on this upgrade. It shows only 1.2 GB storage. However you can root your phone and delete unnecessary files using root browser.
To root your device.
Click this link.
To flash custom recovery (carliv touch recovery compiled by @kenzukie ), install rashr or mobile uncle tool. Both are available in Google Playstore.
Here's the link of the custom recovery.
