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- ...com/blackgeektuto BlackGeekTutorial], and was found at [http://geeksn0w.it/GeekGrade/ geeksn0w.it]. GeekGrade uses many exploits together to create a tethered downgrade without [[SHSH]] blobs. They happen in this order:2 KB (302 words) - 10:59, 12 April 2017
- * You are attempting to downgrade an iPhone from iOS 5 to iOS 4.x. To resolve, use either custom firmware cre * Unable to downgrade. Try changing the USB port (the back one of chassis is better) and restart9 KB (1,431 words) - 20:49, 11 September 2018
- ...] requirements to complete a restore. It is possible to perform a tethered downgrade on any device that is vulnerable to the [[limera1n Exploit]]. ! [[GeekGrade]]4 KB (614 words) - 22:23, 20 August 2022
