Hi,
Updated a GO 710 to bootloader 5.5128(to support SDHC) and NC9.205 for a friend some 2 years ago and this functioned more or less OK.
Problems are: device doesnt turn on in some situations, or turns on unexpected.
Also described here by another user:
GO710 problemSince I tried both NC9.205 and NC 9.510 (Downunder's version with auto-power-on) and the problems stay the same, I suspect the bootloader.
Although 5.5128 is generally considerd to ...