Thread: Alternative Nuvis Firmwares

The Nuvi will "read" hwid number from somewhere within fw_all.bin.
For example 1xxx series (CHN fw_all.bin)



You will see hwid number 1182.
If you open this fw_all with Hex editor and change this 1182 to 9999.
Result :: Garmindevice.xml will say your nuvi hwid number = 9999.
But your nuvi is not exactly 9999 hwid.

Note ::
you can edit this number without effect in functions.

RGN_Tool will override hwid in other point.(not the same point as nuvi read from fw_all to write into garmindevice.xml)

Garmin read hwid number within garmindevice.xml in term of you use original firmware ( so the hwid number is always right.)

But if you use modified firmware so hwid within garmindevice.xml may be the useless data or incorrect.
You have to see what is hwid of boot.bin. (or use G7toWin to detect the real hwid)