Upgrading my Orbit 2

[fitzybaps]

HI, can someone advise please, I have an Orbit 2 running 6.0 and running a Macintosh, I have no access to a PC, my question is can I upgrade to 6.1 from my SD card with a cab file? I have a piece of software that enables me to extract any cab file from the exe file. Any advice would be much appreciated.

Thanks
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