Current firmware without upgrading the version of the iPhone 4 + 4.х.х + 01.59 modem
THEME ONLY FOR iPhone 4! Who can not continue to read 3Gs! With 3Gs, this method will not work!
1. Download official firmware 4.3.1
2. Download TinyUmbrella 4.30.05
3. Run TinyUmbrella .
4. Click " Save SHSH " (wait a bit until they are saved).
5. Run in TinyUmbrella TSS Server .
6. Open iTunes .
7. Click " shift + restore " and select the firmware that you downloaded.
8. iTunes will start the firmware process, flash it and at the end generate an error " 1013 " ( this means that the firmware was installed without updating the modem version ).
9. iPhone will remain in Recovery mode .
10. Stop the TSS Server and close TinyUmbrella .
11. Immediately, while the iPhone is in Recovery mode , we are doing JailBreak .