The iPhone Dev Team has released RedSn0w 0.9.15b2, which fixes a few items for owners of older devices.

The most outstanding fix is for 3GS owners with old bootroms — RedSn0w 0.9.15b2 brings back untethered jailbreak support for end users who fall into that category.

Most of the changes don’t pertain to owners of newer devices, but it’s always a good idea to ensure that you’re running the latest and greatest version anyway. Take a look inside for the full release notes.

Per the Dev Team’s Blog:

Update #1 (Oct 15): Version 0.9.15b2 fixes a few issues for 3GS owners: old-bootrom awesomeness is no longer forgotten directly after a restore, and iPad baseband upgrade/downgrade support is fixed (same production date cutoffs apply!). If your 3GS is currently tethered at 6.0 even though you have an old bootrom, just re-run redsn0w’s Jailbreak step (no need to restore). Don’t forget you can add some pizzaz with your own boot logo or a nerdy verbose boot.

So basically if you have a tethered jailbreak with an old bootrom 3GS, just re-jailbreak with RedSn0w to gain your untethered back.

Be sure to check out our full jailbreak tutorial for RedSn0w 0.9.15 here, and visit our dedicated RedSn0w page for further information.

You can download the latest version of RedSn0w from our downloads page. Do any of the fixes included with RedSn0w 0.9.15b2 impact you?