How to remove outdated certificate from IP500v2/v2A Trust Store 1

[George FA]

For those who might neeed this:

Now the time has come for some cetificates installed over 20 years ago to became outaged.

This is in general harmless, but rahter annoing - SSA constantly reports certificate error. Removing a certificate is a bit tricky, so here is simple instruction

1) Use Manager Security settings to save the outdated certificate on your PC folder in .DER format. The re is not option to do it as .pem
2) Manually change the file extention to .der
3) Remove the SD card from IP500v2 chassis and insert it in any sutable PC card reader
4) Open folder: System/Primary/certificates/TCS/Delete and copy certificate.der there
5) Reboot your IP500v2

Note - you have to either rename certificate extention to the .der or cinvert it to .pem othervise it does not work.