RASMUSRG  AWESOME! i didn't need this for the unlocking but i finally found a app that made it easy to add ringtones to my 1.1.1 iphone.. this app is gold.!  
(Version 1.4b2)

MACEDDY  With all respect, why not just downgrade to 1.1.1 and point your iPhone/iPT Safari to jailbreakme.com ??

Been running Installer.app and bunch of other programs (incl. Mail and Maps) on my iPod Touch....  
(Version 1.3)

SAPPOROBABY  This will not work on the newer iPhones, i.e. v.1.1.2.  
(Version 1.3)

HEFF  This really does work best if you a complete restore to 1.0.2 through the most recent version of iTunes. This is the best GUI for iPhone unlocking out there! Donate to the developer!  
(Version 1.2.4)

JOHNNY ROCKET  update to my last: I decided to do a full restore since I couldn't get summerboard to work. that did the trick. it's working great now. I recommend that if you have 3rd party apps installed, do a full restore 1st, then use iNdependence to upgrade and jailbreak your iPhone. You should have no troubles after that. enjoy!  
(Version 1.2.3)

JOHNNY ROCKET  just tried this out, worked as advertised. I had 1.0.2 with apptap installer and several 3rd party apps. Followed the directions in the help and it worked perfectly. My 3rd party apps didn't show at first, but I used iNdependence to put apptap back on by extracting the 'installer' first from the apptapp app, then I had to just uninstall and reinstall the 3rd party apps. So far I've gotten the following 3rd party apps installed and tested: Apollo, Stumbler, iFlicker, MobileFinder, Services, TapTapRevolution, iBlackjack, weDict, Sketches, VNotes, Books. Summberboard will not uninstall, so can't get it to reinstall.

Haven't gotten it to install my custom ringtones yet. But did a little research and aparantly you can't just rename them to .m4r because it's actually a different kind of file, not just a renamed mpeg4 audio. At least that's what it looks like so far.   
(Version 1.2.3)

CLEAN CREATIVE  Tried installing ring-tones on my iPhone, and upon clicking the jailbreak option, it asked me to select where I downloaded my updates to, so I located that folder and clicked to continue...

iNdependence told me there were no valid updater files in that folder, which is COMPLETELY untrue, they are ALL in there.

Kept trying it, moved folders around, put updaters in that folder, still to no avail iNdependence kept returning the same error code, so I just gave the hell up, it doesn't work.

Plain and simple, NON-WORKING APP here.  
(Version 1.2.1a)

HEFF  Application works great!! Used it to activate my iPhone. I was a current AT&T customer and didn't want to activate up to visual voicemail/data plan. Activated in under a minute with my SIM card, everything works like it's supposed to iTunes. Beautiful! Major props to the developer!  
(Version 1.2.1a)