The PSGrade is now available for iPhone 2G/3G - iPod Touch 1G.
Use :
Your devices must already have OpeniBoot / iDroid PSGrade to work with.
- Copy files and android.img.gz zImage in / var / idroid
- Connect your device to your PS3 as normal for use jailbreak.
- The console should go out and then go into service mode once rekindled.
To perform the downgrade itself to the console, you can follow the tutorial of Shakin .