I'm searching for the firmware 11.20 file .gcd

www.dropbox.com/.../Edge820_1120.gcd

Thanks, I was looking for it too.

Hello looigi, do you still have the file?
The link has expired, and i can't seem to find it anywhere else.
I'm trying to find this aswell, my 820 lasted me 2 hours yesterday, and i want to downgrade.

https://drive.google.com/file/d/1lThLVke1p9yoRjqZ7ysB-TXZDL23zuGJ/view?usp=sharing

You're an absolute legend! have a great day!

You don't happen to have the gupdate file aswell? i can't seem to get this one to actually install for some reason. i'm putting it in the /garmin folder, but it simply starts up with no update happening.

Never mind, i found the information on an italian website, telling me to rename the file to gupdate.cgd

Looks like you're good to go.  If not, I can provide 11.20.  As a matter of course, with Garmin devices, I save and keep all revisions as more often than not, I wind up having to go back.

Yes i managed to figure it out thanks to google translate and the file provided by Nicolas, seems to be better at keeping a charge now, but i am going to let it drain completely and then recharge it over night and then do a factory reset just to make sure it has every chance to be calibrated.

I will keep this revision in my backup folder aswell, good to have a version people seem to be happy with just in case. :)