Sorry no sarcasm, I must focus and get this done ASAP. On my 255W under Garmin\Diag directory there are 3 files: FT.bin, GarminError.xml, sys_log1.bin
GarminError.xml file contained data:
<PCB>nuvi 2W series S2 V4 2GB
that is in conflict of what is shown in the diagnostic screen (S4 board)
What does this mean?

The only .gcd files before the update are under the Garmin\RemoteSW directory (two .gcd and one .bin files) I've updated the 255W using Garmin Express; dodge a brick event because I was downloading the non-MTK version and almost did manual update with it (HWID was 1091)