Update armbian on a Cubietruck

[jollyca]

Hello everyone,

 

I have a Cubietruck w/ Armbian which I installed a long time ago (~4 years I think) and I haven't touched it since. I have an AdGuard server running on it and not much else. Recently, I wanted to install something else and I was hit with a lot of errors when I run `sudo apt-get update`

 

Ign:1 http://httpredir.debian.org/debian stretch InRelease
Ign:2 http://httpredir.debian.org/debian stretch-updates InRelease
Ign:3 http://httpredir.debian.org/debian stretch-backports InRelease
Err:4 http://httpredir.debian.org/debian stretch Release
  404  Not Found [IP: 146.75.2.132 80]
Err:5 http://httpredir.debian.org/debian stretch-updates Release
  404  Not Found [IP: 146.75.2.132 80]
Err:6 http://httpredir.debian.org/debian stretch-backports Release
  404  Not Found [IP: 146.75.2.132 80]
Ign:7 http://archive.debian.org/debian jessie InRelease
Hit:8 http://archive.debian.org/debian jessie Release
Get:9 http://security.debian.org/debian-security stable-security/updates InRelease [48.0 kB]
Ign:10 http://security.debian.org stretch/updates InRelease
Err:11 http://security.debian.org stretch/updates Release
  404  Not Found [IP: 151.101.154.132 80]
Err:12 http://archive.debian.org/debian jessie Release.gpg
  The following signatures were invalid: EXPKEYSIG 7638D0442B90D010 Debian Archive Automatic Signing Key (8/jessie) <ftpmaster@debian.org> EXPKEYSIG CBF8D6FD518E17E1 Jessie Stable Release Key <debian-release@lists.debian.org> 75DDC3C4A499F1A18CB5F3C8CBF8D6FD518E17E1 The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 8B48AD6246925553

 

...and obviously, nothing is updated. Is there a way to update the system over the air, or do I have to update it via the SD card (I was looking for a quick solution, as my board is stashed away somewhere and I use it via SSH).

 

Thank you!

 

`lsb_release -a` says

No LSB modules are available.
Distributor ID:	Debian
Description:	Debian GNU/Linux 9.13 (stretch)
Release:	9.13
Codename:	stretch