- connected my device to my tablet and copied three new tracks to Garmin/NewFiles
- ejected the Garmin mass storage device
- unplugged it after getting the message that it is ready to disconnect
So far everything worked like many times before.
- Device didn't restart completely
- After holding the power button 10 seconds and a few failed boots it came up
- showed the default screen
- touched the screen once on the hamburger menu button and it scrambled
- further resets by holding the power button never got the device started again
Looked around on the net and
- held lap and start/stop and reseted (since switching on/off didn't work anymore) - still no success
- connected the device to my linux computer and found the drive
- formated the device using
mkfs.fat -F32 /dev/sdb - synced before disconnect
Now the device isn't shown as a mass storage device anymore and I can't get it to start.
After a reset (holding the power button for 10 seconds) it beeps, seems to start and gets stuck with a black screen with the word GARMIN printed in bold on it.
Resetting by holding the power button while being connected to my computer shows in dmesg the following messages:
[ 7752.181808] usb 1-7: new high-speed USB device number 55 using xhci_hcd[ 7752.313784] usb 1-7: device descriptor read/64, error -71[ 7752.553550] usb 1-7: device descriptor read/64, error -71[ 7756.360241] usb 1-7: new high-speed USB device number 57 using xhci_hcd[ 7756.512690] usb 1-7: New USB device found, idVendor=091e, idProduct=0003, bcdDevice= 0.01[ 7756.512696] usb 1-7: New USB device strings: Mfr=0, Product=0, SerialNumber=0[ 7758.913329] usb 1-7: USB disconnect, device number 57
If I hold the lap button during reboot it takes a few secnds longer until the USB disconnect message.
I tried to find information about unbricking the device, but didn't find anything.
- Is there some guide how to boot the device into a recovery mode and load its flash with a new firmware?
- Is there anything else I could do to get more information about the state of the device and how to repair it?