Guide to Donwgrade 3GS 4.3.5 to 4.1 100%

Hi,

here is a artefact to Downgrade 3Gs 4.3.5 to 4.1

1. Put Phone to Dfu mode.
2.Update with Itunes(Error 1015)
3.kickout from Recovery with TinyUmbrella
Done

If Phone not squawk discover from Recovery,Update again with Itunes from Recovery fashion select again 4.1 Ipsw.

After this Phone kickout from Recovery 100%:D

BR

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