Debian 8 (eol) Can't apt update && apt upgrade anymore

Hi.
I have an old BB Black (from 2016 IIRC).
It shows:

root@bbb:~# cat /etc/issue
Debian GNU/Linux 8 \n \l
BeagleBoard.org Debian Image 2016-01-31
Support/FAQ: http://elinux.org/Beagleboard:BeagleBoneBlack_Debian
default username:password is [debian:temppwd]
The IP Address for usb0 is: 192.168.7.2

root@bbb:~# apt update
Ign http://security.debian.org jessie/updates InRelease
Ign http://security.debian.org jessie/updates Release.gpg
Ign http://security.debian.org jessie/updates Release
E: The method driver /usr/lib/apt/methods/https could not be found.
N: Is the package apt-transport-https installed?

root@bbb:~# apt-get install apt-transport-https
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following NEW packages will be installed:
  apt-transport-https
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 135 kB of archives.
After this operation, 170 kB of additional disk space will be used.
WARNING: The following packages cannot be authenticated!
  apt-transport-https
Install these packages without verification? [y/N] y
Err http://security.debian.org/ jessie/updates/main apt-transport-https armhf 1.0.9.8.6
  404  Not Found [IP: 2a04:4e42:600::644 80]
E: Failed to fetch http://security.debian.org/pool/updates/main/a/apt/apt-transport-https_1.0.9.8.6_armhf.deb  404  Not Found [IP: 2a04:4e42:600::644 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

--fix-missing doesn’t help either.

What can I do more?

… later …

Checking here here I can see that apt-transport-https_1.0.9.8.6_armhf.deb does not exist anymore.

Shall I try apt-transport-https_1.8.2.2_all.deb ?

https://wiki.debian.org/DebianJessie

It’s eol, archive is archived

Thanks for the quick reply.
I believe I must do a fresh install with:
https://wiki.debian.org/DebianBookworm
#?§$& …

At this point, if you’re image is working, why even update it? It’s been eol for a long time. So why yesterday did it need something?

Good point.
I don’t update when I don’t have to (unlike some people).
On subject host, I use a package from github, which requires an update to add a feature.
It returned errors during the pre-build process.

autoconf-archive not found
...
method driver /usr/lib/apt/methods/https could not be found

I can’t install any package since the apt archive is “gone”.

‘archived’ not gone… See the FAQ at the bottom of my first link.

Thanks for the hint.
Removing existing sources and adding …

deb http://archive.debian.org/debian/ jessie main
deb http://archive.debian.org/debian/ jessie-backports main

… allowed some updates, but some required new packages could not be installed.

I do a fresh install.
I don’t need a graphical interface.
I believe this one is the most recent one for my BeagleBone Black?