I have recently installed Knoppix 7.2 to my laptop. All worked fine. I installed a couple of things then marked all upgrades in synaptic. This failed and now I cannot install anything and get errors. I trawled the forum and saw a comment that you should not try to upgrade the installed packages. Can someone tell me if it is wrong to do the upgrade, if so why and how do I fix it please.
thanks
Sophos SG 230 Firewall Security Appliance Ubuntu Server 22.04 LTS 🧡 & VGA-HDMI
$160.00
FORTINET FORTIGATE 40F Next GEN Firewall Security Unregistered (FG-40F)-Open Box
$225.00
Fortinet Fortigate FG-61E Firewall Network Security Appliance ATP Bundle 1 years
$299.99
Juniper Networks SRX340 SRX300 Series 8-Port Security Firewall Tested
$129.00
Palo Alto PA-220 Next-Gen Firewall 750-000128-00A w/ Power adapter
$50.00
Cisco ASA 5545-X ASA5545-K9 Firewall Adaptive Security Appliance 1x ASA PWR AC
$59.99
OPNsense six-port Gigabit router / firewall on Palo Alto ION 2000 hardware
$69.00
Ubiquiti Networks USG Unifi Security Gateway Router/Firewall
$50.00
Firewall pfSense 2.7.2 Release 8GB Memory - Dual NIC 1 GB - 256GB SSD
$103.77
SonicWALL TZ300 Network Security Appl FirewallRouter5pt 01-SSC-0215TransferReady
$45.00