Ios 5 Untethered Jailbreak And Cydia Help

https://revistas.upeu.edu.pe/index.php/r_theologika/user/viewPublicProfile/381484

The books can be read on any ios 12 jailbreak but will require iBooks to be installed on the device. Since that is a bit more involved (and device specific) we'll leave you to Google look for answers on that.