USB Communication Problem

[Meong]

Help! I'm trying to jailbreak an iPhone 3G, 16GB.
I pointed at 4.2.1 firmware, same as the ones used on it.
But then Redsn0w told me "USB communication problem."

[2k1]

Did ya try a different port?

[Meong]

xD I tried a different port, doesn't work either.
Used 0.9.9b8, but now using 0.9.6rc19
The 0.9.6rc19 works, but the 0.9.9b8 doesn't. weird, I think iPhone 3G on 4.2.1 isn't on jailbreak development anymore, so they didn't care about the bugs within the 3G on 0.9.9b8

[jhbalaji]

Kicout if DFU and replug with different USB Port
Close and Open Redsno0w
select ISPW now and try

[Fionaussie]

I'm having the same trouble. I've tried different USB cables and different ports but still no luck. I think it's got something to do with trying to use a custom ipsw and pwnage tool to move up to iOS 5.0.1 from 4.3.5 when I had been using redsn0w. ... but it could be a coincidence. At least I got past the unknown error 1600 message! ...

[A Retired Mod]

Try restarting your pc or mac.

[hcgaloi]

I think you have two different issues here:

USB problem: Try to hook the USB iPhone charging cable directly to USB port on the computer. Don't go through any USB hub or extension cable.

Error 1600: The iTunes error 16xx means that the host file is redirecting Apple's server to Cydia. Run TinyUmbrella; go to Advanced tab and uncheck Set Hosts to Cydia ...; exit Tiny Umbrella; reboot system

Hope this help... Good luck

[cgavula]

It isn't a USB issue. The 0.9.6rc19 works but none of the 0.9.9 versions do. It's a software glitch of some kind that probably was introduced when adding support for newer OS revisions. Use 0.9.6rc19 - it's easy enough to get.

[Domsagar]

I had the same USB issue with the 0.9.10b6b on the mac. Rebooted, restarted, switched ports etc. Switched over to my work pc and it went through like a charm