yes u can, in fact it is the only way and easiest way to JB fw2.1 other than pwnagetool.

I like this part, please guys, read it!

- The use of SIM-Proxies (small circuit boards/chips that sit underneath the SIM card) to provide GSM/UMTS service on your locked iPhone 3G is a method that we have always advised against. Early reports suggest that the 2.2 update disables the functionality of these devices. The techniques used were always unreliable and we are surprised that they have lasted this long.

Updated news from dev team:



So it won't be long for sure, just for a few days hopefully as they r only left with testing.

This post has been edited by mangoman: Nov 22 2008, 01:29 PM

Yah, quickpwn and pwnagetool r out! Please get them!

Coz nobody pwn it yet. I am downloading the FW 2.2 now, damn, should have downloaded it earlier. But I think all apps should work, if not, dev team will warm us in their blog.

@wilsoncvt

Do u still remember last time when FW 2.1 was first released? During that time, winpwn and quickpwn 2.1 is not available, there is one way to make the cydia visible using quickpwn 2.0, u have to edit some stuffs. But I dun remember. Just give u some idea so u can look for it. Cheers.