I do want an untethered jb, indeed. The battery empties so fast on these devices that keeping the computer at hand when the phone needs to be turned back on is a major hindrance.
In fact, I am pretty much indifferent to iOS version, but apps may and will require iOS 6 at a minimum, and don't want to be held back. Currently, these applications (at least those I use fairly regularly) are Evernote Food, Jasmine and SPC card. Granted, this may not seem like much, but as applications are updated, it will grow. Most of the applications I am using (that are quite common, really) require iOS 5 or better. iOS 4.1 is therefore too old to be used at present.
I repeat, since SHSH blobs are device-specific AND iOS version-specific, there is no way I could get them for an iPhone that was jailbrken for iOS 4.1 and not upgraded since. As I stated in post #11, I used iFaith on both this other iPhone 3GS AND my own, much as a matter of comparison. The white one has 4.1, my own has 6.1.2. As such, I do have 6.1.2 blobs saved for my own phone, and asked if they would be stitchable to a stock iOS 6.1.2 if a manual reinstall is needed for my own phone, and if this "signed" iOS 6.1.2 would be installable through iTunes, bypassing Apple authentication that will surely fail since iOS 6.1.2 is not the current iOS version.
The white 3GS, the subject of my first post, stayed untouched since on this topic it was said that 4.1 SHSH blobs wouldn't be stitchables on iOS 6.1.2, or even 5.1.1. I am trying to get this white 3GS upgraded to 6.1.2, since the official jailbreak team has voluntarily halted searching for iOS 6.1.3 security holes, necessary to build a successful jailbreak, to avoid Apple prematurely closing them in the upcoming iOS 7, and instead concentrate their efforts on the upcoming iOS.
The revised question would now be: how do I get a software-unlocked iPhone 3GS, since the current iOS 6.1.3 has no jailbreak and knowing SHSH blobs for this device only exist for iOS 4.1 and iOS 6.1.3?