Thread: nuvi 255W freeze on Loading maps

Right, wrote the above too quickly. Should have been: 'If you're uncomfortable using a hex editor ...'. Anyway I'm going to assume you can do the hex edit from '0C 80 A0 E1' to '0C 80 A0 E3' in the V6.4 ldr.bin [boot.bin] i supplied earlier in the fw thread. Then follow the other steps in kunix's post using this as the text command to test if it will work:

rrgn,41,1:/41_backup.bin
reboot

But if it won't dump 41 then the flash is probably damaged and no point going any further. I'm sure Loly tried everything else for you via PM.

So the steps in detail: Open Notepad and copy/paste the above into a file named update.txt in Garmin/Updater/0827 on an SD card. Don't put ldr.bin in the folder with update.exe for this exercise like you usually would. With the unit fully OFF, insert the SD card.

Do the flash, open the patched v6.40 ldr.bin [boot.bin] in RGN_Tool and save it as an RGN file:

[Only registered and activated users can see links. ]

Name the file 082701000640.rgn and save it somewhere convenient, you desktop is easy. Place [Only registered and activated users can see links. ] in the same directory/folder as the rgn file and then drag it onto Updater.exe to open it. Leave it visible on your desktop with the 'USB Device' radio button selected:

[Only registered and activated users can see links. ]

Attach the 255W in preboot and when the unit's details appear in the window next to 'USB Device' as above, immediately hit 'OK'. Keep your finger on the screen at least until 'Loader' appears on it. If this is successful and you have 41_backup.bin on the SD with size of 5,120KB then we can go further.