Thread: IMPORTANT! If you want HELP in case of a bricked Garmin device, please follow this

1) Bricked device MODEL, Firmware version, HWID.
Nuvi 255W, V7.80 but also 4.20, 827
2) Why and how the device got bricked.
I was following Butters' tutorial on converting the 2x5w series to 465 to get Lane assist, and flashed the hybrid firmware with no issues. I flashed the full 0943 firmware, and the device updated with updater.exe, I saw the pc connection screen on the Nuvi's display and then disconnected it, but as I disconnected it I saw a glimpse of the "software loading" screen or something of the sorts (I forgot the exact text but it was the loader text)
3) Symptoms: what's wrong in your device?
It's just on a black screen now, it might be important to mention that the battery on this nuvi has been kaput for a while.
4) Does your pc sees your device ?
Not as far as I know
5) List all the procedures you already tried to unbrick it and their results and errors messages obtained.
Trying to turn it on lol, no result
6) Do you have Garmin USB Drivers installed ? Garmin: USB Drivers Updates & Downloads
Yes
7) If you don't know HWID get it by Use program G7ToWin to retrieve your HWID
827
8) Write down if you already read and tried everything in these two threads: GarminCure3 tool - the new way to create cure firmwares for Garmin devices and How to unbrick a nüvi - step by step guide
N/A as the device can't reach preboot
9) Can you reach preboot mode? If no ,have you followed this? Garmin devices preboot mode
No
10) Probably no , but do you have NV backup?
I believe so, it's a file called "41.bin" and I was told to make a backup at the start of the tutorial