To get out of that post 4.1 install using the above method I just used redsn0w_win_0.9.15b3's extras mode to exit restore loop. I went from 5.1.1 to 4.1 but got stuck in Plug into iTunes screen. So with Redsn0w, TinyUmbrella 7.04 (and its TSS Server on) running as admin I Shift Key + Clicked Restore in iTunes 12, chose 000000CFBA19D54C_iFaith_iPhone_3GS-5.1.1_(9B206)_signed.ipsw, and it restored as normal and used Bell SIM to activate.

I may have entered PWND DFU mode with it open. Tinyumbrella 7.04.00 Windows Download Tinyumbrella 7.04 00 Windows Tinyumbrella 7 4 0 0 ERROR FIX Done on windows 10 after speding all day working out how to get Tinyumbrella 7.4.0.0 to. Also had redsn0w_win_0.9.15b3 running when I entered DFU, BOTH IN ADMINISTRATOR. After clicking on the software but it won't start, you can just follow the steps below: Double-click on the icon again, if it still not launching, click Properties and then restart your computer. TinyUmbrella doesn't open on Windows 10/8/7. Was able to restore 3GS to 5.1.1 from 6.1.6 by entering DFU mode (Power + Home for 10 seconds, then let go of Power Button and keep holding Home for 10 seconds) with tinyumbrella-7.04.00.exe running with server button in it clicked. Disable your anti-virus and Windows Defender and run the program in compatibility mode. Used iFaith-v1.5.9 to save blobs for unsigned iOS versions mentioned BEFORE upgrading. Explore loadingtribe931 Tumblr blog with no restrictions, modern design and the best experience - Tumgir. Here are my quick notes from the process if it helps you:

I've taken my 3GS from 5.1.1 to 6.1.3 then down to 4.1 then up to 5.1.1 in the last year after getting it back from my brother and repairing screen/replacing battery.

Tinyumbrella 7.04.00 not installing