Sometimes the underlying Windows device drivers fail to translate the cryptographic AP ticket request between the phone and tool.
: Go to the Toolbox tab, select iTunes Utility , and click Repair Driver . A corrupted driver can block communication with Apple's servers. i unable to request shsh 3utools fix install
If it’s red (unsigned), you must download and flash the latest signed version instead. How to Fix 3uTools 9% ERROR Unable to request SHSH Latest Sometimes the underlying Windows device drivers fail to
Outdated versions of 3uTools fail to handle modern Apple cryptographic requests. select iTunes Utility
这与是否。由于 SHSH 是根据每台设备唯一的 ECID 和固件版本生成的，别人的备份不能用于你的设备。因此“别人能降级，我也能”的推论并不成立。
Open 3uTools and click on the tab on the top menu bar. Locate and open the iTunes Utility option. Click on Repair Driver .