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* An iPhone (First Generation or 3G only) or an iPod Touch (First Generation Only)
* Firmware of iOS 3.1.2/3.1.3/4.0.0/4.0.1/4.0.2/4.1 (confirmed) jailbroken with PwnageTool, Redsn0w or blackra1n (NOT Spirit)
* Download Files (You must login or register to view this content.)

Enabled Factory/Service Mode - install openiboot with bootlace and then
you need to copy the zImage and android.img.gz files into /private/var/idroid

Tutorial:
Prepare a blank USB memory stick with only 2 files on it: Lv2Diag.self (file 1) and the modified 3.41 PUP file(Download You must login or register to view this content.)(UPDATE with MU link)
These must be in the root of the memory stick and there must not be other files on it.

- Insert the iPhone/iPod with the downgrade firmware in your console.
- Turn on the PS3 using the standard iPhone/iPod sequence; power cycle, power on, then quickly press eject. After a very short while the PS3 will power off.
- Turn on the PS3 to confirm that it is in Service Mode.(You should see a red box on the screen saying Factory Service Mode)
- Turn off the PS3 and remove iPhone/iPod.
- Insert the USB memory stick with the 2 files on in the rightmost USB port of the PS3 and turn it on. The screen will be black,
but the LED on the PS3 will blink.
– Wait 3 minutes for the system to install the old FW, towards the end the power button on the console will start flashing green and then your console will power off.
- Remove the USB memory stick and turn on the PS3. It will still be in service mode.

- Insert USB drive in PC, delete the 2 files, and copy LV2Diag.self (file 2) to it.
- Insert USB memory stick and power on the PS3. After approximately 10 seconds it will power off.
- Remove the memory stick and power on the PS3. The procedure is now complete.

[ame="https://www.youtube.com/watch?v=tnJBUjJgnjE"]https://www.youtube.com/watch?v=tnJBUjJgnjE[/ame]

Thanks to ASxTecH for the video

Thanks for clarifying Ryan your a real help

i need this for ti-84 i cant wait

Can we use iPod 2g? I've seen it asked many times, and I honestly do not see why not. Its fresher, has more memory and possibility, and it must be hackable if its jailbreakable [mine is] and is older than the iPhone 3G.

NO only ipod 1g, iphone 1g/3g. Brandon Wilson(maker of Ti-84 hack) noes about the downgrade and is working on it.

You must first download and install openiboot with bootlace on the iPhone/iPod, than open up the service_jig file using winrar and put the 2 files /private/var/idroid

I updated my first post and put a video of the downgrading process(its the PSJailbreak in the vid BTW but its done the same way)

nice now only for the TI-84

Ok, I'll change my question. do you know why it won't work on the iPod 2g? Like..the technical specs of why not?

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ok this might sound dumb but here it goes lol... i have my iphone 3g and i have ubuntu desktop intsalled.. but i cant find my usb memory stick anywere! my buddy said he could give me one tomorrow ... is there anything i could download on the iphone to get around the usb stick step?

People have. You just havnt seen the posts... LoL