This method is described for switching from version 1.1.4 of any unlock (in my case it was ZiPhone) to version 2.0.1
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Updating occurs using self-assembled firmware via the iTunes update function. It is still simpler than it was in the case of 1.1.4.
Update iTunes to version 7.7.1. If you need data on the phone, save it using iTunes – backup copy. Download the collected firmware 2.0.1. (Includes sidia and installer) .Connect iphone to computer and hold down both buttons until cable image appears on phone’s screen (mode of mode recovery). Go to iTunes and when phone is detected, press restore button while holding Shift button on keyboard. In the file selection window, specify the downloaded firmware. Then we do not touch anything, we observe the process. First comes the flashing of the phone, then the settings. On the display of the phone everything will be visible. After several reboots, you will have a working device with firmware 2.0.1 and a Russified keyboard. If you saved the data in a backup, you can restore it. iTunes itself will offer to do this.
If you don’t have an account on iStore yet, I recommend to get one, then the programs from the App Store will be available to you. And not only.