Quote Originally Posted by gpsnoob View Post
How do I make another .rgn file? Same process as you've mentioned before?

4). Use RGN_Tool :: Load US boot.bin from1). , fw1_resources.bin from3). , fw_all.bin from2)

Tried doing this and saved it as GCUPDATE.gcd, loaded it into Garmin's .System, the unit almost bricked (I think)

It didn't boot up, stuck in loading software then reboots again and again. Flashed it with the cure FW then ran the recently made RGN file again.

Did I do it wrong?
If you save as .gcd so you need to override the same swv both boot&fw_all or Nuvi will get rebooting loop.
If you use gupdate.gcd , you should put this file in Sd card\garmin.
If you still get rebooting so you don't need to make a cure firmware, just reflash with original firmware or worked rgn so Nuvi will start normally again.