I just dumped 65 images and created a spreadsheet describing the menu options on my radio.
Discovering .chirp/backups made this a lot easier. First, I moved the original backups out of the way and created a temporary empty backups directory. After each image dump, I just ran 'mv TID* somefilename' in the backups directory. Afterward, I moved the backups directory elsewhere and put the original backups back.
You should be able to see two files here (a PDF and a google sheet) and a subfolder with the (currently) 65 images.
There is a default image which is from uploading the original
factory default image to the radio, then every other file changes only
one setting from the default to a setting that is described by the name
of the file. I also included the version of the online manual that I
just downloaded that does not cover all of the settings (and actions;
some of the menu "settings" are actually actions), but covers more of
them than are currently covered in chirp. If I dump more images to get
more setting information, I'll plan to add them here. I dumped some of the options that are already covered, sometimes because the name in the current menu structure doesn't exactly match the name in the menu structure and I wanted to be sure I was looking at the same thing.
I don't have any plans to delete them, but anyone should feel free to download and/or copy them at your own discretion.
In addition, I have emailed tidradio to ask for information — since they explicitly advertise chirp support for this radio on their site and in their amazon listing, it's not impossible that they'll actually want to help.