Originally Posted by porga
And I forgot to ask this
:So extension.cfg is override file. But where is original file located where extensions are defined? I would like to copy entries from it and only add alternatives. Please explain.
Both files are used, so you don't need to copy entries from one to the other. Your custom version is searched first for a match, and if none is found, then the default system version is used.
You should only be adding lines for new applications that you installed. Don't add lines from someone's old config file because the applications in there may not even be on your newer device. Let the default system extension.cfg file take care of the other formats.
The default system version is at /ebrmain/config/extensions.cfg
, which is not accessible via USB mounting. You need to use some type of shell program to copy it to the SD card or /mnt/ext1 partition if you want to access it via USB.