3utools API - userlandkernel/Reversing3utools GitHub Wiki
3utools API documentation
Since I found that 3utools has a REST API, I started to examine the API so programmers can reuse it in their projects.
Get iOS http://app.pcres.3u.com/firmware_iosVersion.action
Any http://app.pcres.3u.com/firmware_list.action?model=iPhone+XS+Max&fs=1&seltype=3&ios=12.2(16E227)
Flashable (FS=3) http://app.pcres.3u.com/firmware_list.action?model=iPhone+6s&fs=3&seltype=1&ios=12.2(16E5227)
Flashable and Jailbreakable (FS=4) http://app.pcres.3u.com/firmware_list.action?model=iPhone+4&fs=4&seltype=1&ios=12.2(16E5227)
Selective on specific os build (seltype=2) http://app.pcres.3u.com/firmware_list.action?model=iPhone+6s&fs=1&seltype=2&ios=12.2(16E5227)
Signed unc0ver: d.updater.3u.com/3utools/tool/s1554705421945_333667.ipa