If you installed a firmware update 2.0.0 or newer on your Y1 device and the scroll wheel stopped working, please install this version on your device instead.

Firmware release notes · Original Software · Y2
System Software Update 1.7.6 (for type B Y1)
The stock Software path for restoring an Innioasis Y2.
Download this release
Published by the y1-community/y1-stock-rom project [1] [2] [3]