Upgrade to 4.3.1/2

[RIKKI123]

Hi,

Basically, i have an iPhone 4 on 4.1, been saving it at this version because i've been hearing since September that the unlock was "just around the corner". Anyone keeping up with the unlock scene knows how well that turned out BUT, just incase, i dont want to take any chances, so i want to upgrade to 4.3.1/2 (which ever is easiest). So, what i'm trying to say is, can someone please post a COMPLETE "how to" guide on how i can upgrade to the specified firmware WHILST preserving my baseband. Im aware there are several guides on preserving baseband, but i want to be absolutely sure, because i read somewhere about Apple not signing the hashes anymore of particular firmwares.... or something.
Could someone please point me in the right direction, thank you very much in advance.

[Simon]

Safest way to preserve baseband is with custom firmware made with pwnage tool or snowbreeze. What SHSH do you have?

[StealthBravo]

Yep custom firmware all the way

[RIKKI123]

I have SHSH for 4.1 upwards, well, so it says on cydia. Thank you for the quick replys by the way.

[Simon]

Then you can make a custom firmware with one of the tools I said before. Either a custom 4.2.1 or 4.3.1, your choice.

[RIKKI123]

Then you can make a custom firmware with one of the tools I said before. Either a custom 4.2.1 or 4.3.1, your choice.

Ok thanks, one final question, would i have to alter the host file?

[Simon]

Yes, or just use tiny umbrella to do it for you.

[RIKKI123]

Thank you so much, your quick replies sets an example of what should be expected from a mod on ANY forum. I'll post back with my results, thanks again !

[Simon]

no prob, good luck

[RIKKI123]

WOW got an issue straight from the beginning!
Opened up latest version of Tiny Umbrella and it says "Cannot Start TSS Service DO NOT TRY RESTORING YOUR DEVICE!!! Your hosts file is not writable!" .
Suggestions?

[Simon]

Run tiny umbrella as administrator

[RIKKI123]

Yeh i did that, this is what came up :S

[Simon]

What OS are you on?

[RIKKI123]

4.1

[Simon]

I meant your computer

[RIKKI123]

Oh sorry, Windows 7

[Simon]

And you tried right-clicking on tiny umbrella and choosing to run it as administrator?

[RIKKI123]

Yup, and this is latest version of TU, just downloaded it from thefirmwareumbrella.

[Simon]

Something may be on your computer that is blocking it. Skype, teamviewer, virus program etc.

[RIKKI123]

Hmm ok i'll check that. I do have a thought, im sure i've used TU before, so the hosts files definitely have been altered. Is their any way of RESETTING the hosts files ? Like, so they were back to their default nature? Then i could try opening up TU again and letting it start from scratch