Hi, I own an ipad1 with iOs 4.3.1 on it in a tethered jailbroken state. Now, I wanted to upgrade to 4.3.1 so I could jailbreak it untethered. So I connected it to my laptop, opened up iTunes and tried to Shift+Click restore it after putting it in DFU mode with the original 4.3.3 ipsw. Whilst in the process I encountered 3 different error codes: First I had the 3194 error which I fixed by downloading TinyUmbrella and unchecking 'set hosts to cydia on exit'. The error did not occur again, but I did get another one. This time it had the code 1604. This I fixed by download iReb to do the Limera1n bootrom exploit. After this however I get to the stage which I'm currently still stuck in. The error code now is 2005, on google it says I can help it by changing the usb port. I tried every single port and none of them worked. Now I'm clueless. What should I do?