I keep an archive of profile backups on an external hard drive. The backups are compressed, and I usually include the version of Firefox last used by the (principle) prof… (tuilleadh eolais)
I keep an archive of profile backups on an external hard drive. The backups are compressed, and I usually include the version of Firefox last used by the (principle) profile in the compressed archive filename (e.g., userinfo-firefox-56.0_date). I also make a semi-regular sync backup of the currently used profile. So far, so good.
My currently synced backup, which has not been compressed and archived, is about a month old. (I did say semi-regular.) I would like to compress and archive it before syncing, but I am no longer sure of the exact version of Firefox it used. I usually run updates when released, and can suppose Firefox 65.x, but what if I would like to be more exact? After running a search of files containing "version" in the main profile, I came across a file named compatibility.ini, which resides in the root directory. The contents are as follows:
LastPlatformDir=C:\Program Files\Mozilla Firefox
LastAppDir=C:\Program Files\Mozilla Firefox\browser
Is this a reliable way to detect the last version of Firefox used by the profile?