Thread: Cannot update eTrex 20 with a very old firmware

The correct path for your eTrex to card should be 1 not 2. Regardless, the first and last commands should still have worked to give '14-1.bin', successfully reboot and also generate 'last_id.bin' and 'update.log' (you wrote 'update.txt' but likely that's a typo i guess). The bootloop is concerning and may indicate physical flash damage. Even if the device has a different HWID to 1305 it wouldn't result in a bootloop just a complete ignore of the folder '1305' and it's contents. Did you see anything on the screen before the bootloop started? "Loader" or similar words, or a white screen, even very briefly?

I wonder why you are trying to dump 140, rather than 41? Likely region 140 is either missing or empty on eTrex.

Just to be 100% sure, look at GarminDevice.xml in device's Garmin folder to confirm HWID. Look for "<PartNumber>006-Bxxxx-00</PartNumber>" near start of XML file. xxxx shows HWID.

Originally Posted by Butters

The correct path for your eTrex to card should be 1 not 2.

Yes, but in forementioned thread was a note about new devices which uses 2 instead 1 as a SD card path, so I decided to test both ways.

Originally Posted by Butters

Regardless, the first and last commands should still have worked to give '14-1.bin', successfully reboot and also generate 'last_id.bin' and 'update.log' (you wrote 'update.txt' but likely that's a typo i guess).

Yes, it was a typo.

Originally Posted by Butters

The bootloop is concerning and may indicate physical flash damage. Even if the device has a different HWID to 1305 it wouldn't result in a bootloop just a complete ignore of the folder '1305' and it's contents. Did you see anything on the screen before the bootloop started? "Loader" or similar words, or a white screen, even very briefly?

Firstly I hear one click, then two clicks with a higher pitch, then Garmin logo appears on a screen, then these three messages:

[Only registered and activated users can see links. ]

[Only registered and activated users can see links. ]

[Only registered and activated users can see links. ]

After that device start new circle of reboot. Here you can see and download the video of process: [Only registered and activated users can see links. ]

It seems device doesn't load updater at all and trying to boot ordinary but something on SD prevent it. Without SD it boots perfect. Very strange behaviour. :-(

Originally Posted by Butters

I wonder why you are trying to dump 140, rather than 41? Likely region 140 is either missing or empty on eTrex.

Someone in the forementioned thread use this region for dumping so I decided to take a chance.

Originally Posted by Butters

Just to be 100% sure, look at GarminDevice.xml in device's Garmin folder to confirm HWID. Look for "<PartNumber>006-Bxxxx-00</PartNumber>" near start of XML file. xxxx shows HWID.

Here: <PartNumber>006-B1305-00</PartNumber><SoftwareVersion>116</SoftwareVersion>