Erwischt 
Hab mit Hilfe von Videos damals installiert, aber seit dem nicht mehr im Betrieb gehabt. Jetzt wollte (muss) ich das Thema angehen, aber die Updates gehen nicht.
Hier der Auszug den Du brauchst:
========== Start marking the full check here ===========
Script v.2024-10-19
*** BASE SYSTEM ***
Static hostname: iobroker
Icon name: computer
Operating System: Debian GNU/Linux 11 (bullseye)
Kernel: Linux 5.15.61-v8+
Architecture: arm64
OS is similar to:
Model : Raspberry Pi 4 Model B Rev 1.4
Docker : false
Virtualization : none
Kernel : aarch64
Userland : 64 bit
Systemuptime and Load:
13:41:50 up 14 days, 22:57, 3 users, load average: 0.22, 0.24, 0.19
CPU threads: 4
*** LIFE CYCLE STATUS ***
Debian Release codenamed 'bullseye' reached its END OF LIFE and needs to be updated to the latest stable release '' NOW!
*** RASPBERRY THROTTLING ***
Current issues:
No throttling issues detected.
Previously detected issues:
No throttling issues detected.
*** TIME AND TIMEZONES ***
Local time: Sun 2024-11-24 13:41:50 CET
Universal time: Sun 2024-11-24 12:41:50 UTC
RTC time: n/a
Time zone: Europe/Berlin (CET, +0100)
System clock synchronized: no
NTP service: inactive
RTC in local TZ: no
*** Users and Groups ***
User that called 'iob diag':
iobroker
HOME=/home/iobroker
GROUPS=iobroker adm tty dialout cdrom sudo audio video plugdev games users input render netdev bluetooth lpadmin gpio i2c spi
User that is running 'js-controller':
iobroker
HOME=/home/iobroker
GROUPS=iobroker adm tty dialout cdrom sudo audio video plugdev games users input render netdev bluetooth lpadmin gpio i2c spi
A default user should be created! This user will be enabled to temporarily switch to root via 'sudo'!
A root login is not required in most Linux Distributions.
Run 'iobroker fix' or use the system tools to create a user.
*** DISPLAY-SERVER SETUP ***
Display-Server: false
Desktop:
Terminal: tty
System is booting into 'graphical.target'. Usually a server is running in 'multi-user.target'. Please set BootTarget to 'multi-user.target' or run 'iobroker fix'
*** MEMORY ***
total used free shared buff/cache available
Mem: 7.8G 587M 5.6G 38M 1.6G 7.1G
Swap: 99M 0B 99M
Total: 7.9G 587M 5.7G
Active iob-Instances: 5
7811 M total memory
588 M used memory
433 M active memory
1569 M inactive memory
5582 M free memory
128 M buffer memory
1512 M swap cache
99 M total swap
0 M used swap
99 M free swap
*** top - Table Of Processes ***
top - 13:41:51 up 14 days, 22:57, 3 users, load average: 0.22, 0.24, 0.19
Tasks: 185 total, 1 running, 184 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us, 1.5 sy, 0.0 ni, 98.5 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
MiB Mem : 7811.3 total, 5582.1 free, 588.2 used, 1641.0 buff/cache
MiB Swap: 100.0 total, 100.0 free, 0.0 used. 7062.8 avail Mem
*** FAILED SERVICES ***
UNIT LOAD ACTIVE SUB DESCRIPTION
* systemd-timesyncd.service loaded failed failed Network Time Synchronization
LOAD = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB = The low-level unit activation state, values depend on unit type.
1 loaded units listed.
*** DMESG CRITICAL ERRORS ***