Hi Aekhong,
I copied "Garmindevice.xml"(from nuvi 255w) to SD card in "Garmin" folder with Israel map file gmapsupp.img.
Tried to update with WebUpdater' but cannot see Hebrew voice file. ( lot of other languages are there)
I cannot see hwid and swv hwid and swv within garmindevice.xml.(open with microsoft excel)