Android application package for VPN Proxy Master Pro, version 1.8.9, labelled as a VIP build, 11.0 MB in size. It is a VPN client for routing a phone's traffic through remote servers, not repair documentation or firmware. Installation requires allowing apps from unknown sources on the device. Modified VIP builds of commercial apps come from unofficial sources and can include tracking or malicious code, which is a particular concern for VPN software that handles all network traffic, so scan it carefully before use.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @mobile_jump2. Enginerys does not host this file.