美板iPhone 3G unlock JB 求救

在爬文後被搞得好亂
所以乾脆發一篇求救文

小弟的舊美板iPhone 3G
本來韌體3.1.2用得好好
因為自以為是沒做好功課的想要升到4.2.1
後來發現要更新出現
"No sim card installed
insert a valid sim with no pin lock
to activate iphone"
的字樣
然後就甚麼都不能做了

有誰可以救救我啊!!
2011-09-22 20:30 發佈
An alternative option is to create a custom firmware with PwnageTool and upgrade to baseband to 06.15.00, then unlock with ultrasn0w.

However, you will lose your GPS functionality once you do so and you can *never* restore to stock iOS anymore.

The New Flying MacBook Pro; Seatbelts sold Separately!
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