iReb is a tool (created by iH8sn0w. ) for Windows® that will put your device into a pwned (jailbreakable) state so that you can upload custom firmware to it.
For S5L8900 devices, it uploads the following:
iReb supports these device:
- iPhone 2G
- iPhone 3G
- iPhone 3G[S] (old & new bootrom)
- iPhone 4
- iPod Touch 1G
- iPod Touch 2G (MB & MC)
- iPod Touch 3G
- iPod Touch 4
- Apple TV 2
Official website: http://ih8sn0w.com/index.php/products/view/ireb.snow
It’s a very useful tool to fix unknown error 1600, 1601, 1602, 1603, 1604, etc.
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