running an older version of Firefox

[Skaperen]

Synaptic has "lock version" and "force version" but they are pretty limited.

This isn't a "normal" procedure, but I've had very good results by "installing"(*) firefox from
https://ftp.mozilla.org/pub/firefox/releases/

(*) It's not a real install; you expand the .bz2 file into a directory, then run the firefox binary from there, probably with links so the executable will be in your PATH.
I also remove the officially installed firefox so there aren't two versions around.

i don't see any .bz2 files there. all i see for version 69 is individual files.

[Dennis N]

The last FF 69 point release:
https://ftp.mozilla.org/pub/firefox/...-x86_64/en-US/