Patched firmware with BREW signature checks removed.
Need to use RSDLite 4.8+ (earlier versions will not flash it) and drivers version 3.7.0 (with the other versions RSDLite 4.x+ freezes in boot mode on Win8\Win10 x64) 
See https://lpcwiki.miraheze.org/wiki/Running_unsigned_code_on_BREW_devices/Motorola for how to install.