edit: i gave up and tried a day later;
fortunately the captcha came back to the usual (most impossible as usual, but you just need to refresh until you get something readable).
Aisi Assistant is a management software for Apple devices (such as iPhones and iPads). It supports data backup and recovery, file management, device information viewing, firmware downloading and flashing, and phone junk cleaning. It can also be used to install apps and games, helping users bypass the App Store.