Hey all!
I have a small question. The iPhone 4 that I have is on 4.0.2. It's factory unlocked with baseband 01.59.00. Is it worth upgrading to the 4.2.1 OS at this time? If i choose to upgrade, then will the upgrade remove the factory unlock?
I was browsing the internet for some time and read a few incidents where people claimed that the iPhone 4 was factory unlocked, and after upgrading to 4.2.1, the unlock seems to have disappeared. They claim that their previously working sim cards are now useless as the phone will not identify them. Any ideas about this? I'm quite concerned about this whole upgrading fiasco as I don't want my iPhone to turn into a brick.
I downloaded TinyUmbrella and saved the SHSH blob but even that seems quite confusing. I am attaching a screenshot to illustrate my concern.
The Installed Firmware and baseband shows my phone's firmware(4.0.2) and baseband(01.59.00). But the SHSH that I saved, shows iPhone 4.2.1(8C148). Is this weird? Because I clearly followed the iClarified tutorial on how to save the SHSH blob. Just connected my iPhone, went under connected devices and clicked on Save SHSH.
Anyways, back to my question, if in case something goes wrong when I choose to upgrade to 4.2.1, can I set my iPhone back to the original settings that it came with? I don't have much concern about the data as it's all saved on my computer.
Any ideas fellas? Thanks in advance for reading this long post of mine.
Cheers!