Hi, please could you help me. i have an iphone 3g on 4.2.1 and the ipad baseband and when i erased all contents and settingd im stuck in recovery mode. i just want to reinstall a software on it. i have used tinyumbrella to save my SHSHs when it was on the 4.0 firmware. at the moment all ive got is an iphone in recovery mode and an error 1605. i dont have windows to use ireb. Please help! thanks so much in advance!