To open full map with all DLCs you have choose two ways – just download ready profile (exact from the video) or create one yourself. Or even modify your existing profile. Please be careful and make a backup of your game profiles before starting

Two videos – for 1.44 and 1.45

Links:

Full 100% opened save profile https://sharemods.com/onhsecwi9sso/trucksim_top_save.7z.html
Text file with 100% opened map to update your profile (do not touch it if you don’t know what to do with it) https://sharemods.com/o4pin6m3gg8e/full_save_ets_july22.txt.html
Tools:
TS SE https://forum.scssoft.com/viewtopic.php?p=1060834
7zip https://www.7-zip.org/
Sublime Text https://www.sublimetext.com/