Forgive me for asking but I do not understand the images section.

I have a sab unix solo but I do not know which image to pick.
Can someone tell me what the formula is so that I can understand it

I do not know what the folders mean:
ufs992
ufs913
ufs912
ufs910
topf
.....


And I do not understand the file format either:

HDMU_1667_E2_ufs922_209_git_5281_nodebug_nolcd_Dif f0_gst_USB


what does the 1667 or 209 and 5281 mean?

Any help is appreciated!

Kindest Regards

Michael