I've done a lot of research on this and I just have a few questions before I turn my iphone into a paperweight. I bought a used Iphone 3g with 3.1.2 (7D11) and firmware 05.13.04. I want to upgrade to 4.1.2. I downloaded SnowBreeze 2.1 with the 4.1.2 version for my phone. The steps look pretty easy, BUT, if I have a problem for whatever reason will I be able to put 3.1.2 back on? I tried tiny umbrella to save off the 3.1.2 shsh blobs(??) but it says there are none available, but I also read online that I wouldn't need the shsh blob for the 3G phone on 3.1.2 (is that true). Can I restore to 3.1.2 without having the shsh blob? My 3g is currently jail broken and unlocked for t-mobile. Will upgrading to 4.1.2 using SnowBreeze be okay. Will it still be unlocked for t-mobile. Also is it worth upgrading from 3.1.2 to 4.1.2. I heard that 4.1 fixed the slow issues in 4.0 and that there are some new features like foldering and multitasking?? Thanks.
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Upgrading iPhone 3g from 3.1.2 to 4.1.2??
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Stay away from snowbreeze, it junk and its very buggy.
Use Dev Team tools like Redsnow or pwnage tool.
Use Dev Team tools like Redsnow or pwnage tool.
