![]() The algorithm it’s based upon is quite complicated and requires a great deal of tech knowledge to fully understand. In a nutshell, TinyUmbrella automatically retrieves the current firmware (SHSH blobs), then saves it locally and sends it to Cydia, which preserves it for later use. Using a TSS server, the restore operation is facilitated at once. If, for some reason, the server is down, you can use iTunes to perform the downgrade.Ī less happy scenario is the one where Apple stops signing a certain firmware update. It’s common knowledge that the company allocates a limited period of time for signing a specific update and so, when the interval is over, there is no possible way to retrieve the SHSH of that firmware. If this occurs, TinyUmbrella will display a suggestive messages such as ‘You are too late’ even so, you might find a solution in iFaith, which extracts the SHSH blobs directly from your device instead of Apple’s or Cydia’s servers. ![]() However, in order for this to work, the firmware you wish to downgrade to needs to be located on the device, otherwise it won’t pay off. ![]()
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