Owner of two week 50 1.1.2 BL 4.02.13G. I've made all the right stuff. Jailbreak, installer and so. I decided to buy ultrasim. I also installed iworld. It's been working pretty well since i had some problems with sms numbers. I did a search on some forums so i find a solution thru changing appsupport (http://cynix.org/iphone/AppSupport-9.tar.gz) for spain movistar.
I've overwrite the file (AppSupport) via ssh and now the phone is "bricked". i have only the apple logo. No signs with power+home buttons not even with iNdependece... The phone is "somehow" rebooting (flashing the screen) each 5 minutes or so but going back to the same apple logo.
I appreciate your help.