The procedure is in the 3.5 installation manual under maintenance and troubleshooting...Flash ROM Update. It requires a lot of steps and some passwords, so it is better we don't put it here.

I would take your system to 4.0 (do not use 4.1) which allows the XTS to use some of the newer phone sets, like the Edge 700 series.


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"Old phone guys never die, they just get locked in some closet with an old phone system and forgotten about"

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