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Thanks a lot for the info.
Even this didn't work I am puzzeled I feel there is something wrong with this specific phone since I am not able to downgrade with SHSH to 4.1 and TU but I can do it with...

error 20 occurs only if I try downgrade using shsh with tiny umbrella on my 3gs, what interesting was it didn't happen with my 3g using same process. so why all these security isuues are not a...

Thanks for the info.
Just want to add that the only thing would work on this phone is just normal restore 4.3.5.
I tried downgrading my 3g from 4.2.1 to 4.1 with shsh file and tiny unmbrella...

I tried different computer and still getting the same error. I tried to downgrade with shsh files to 4.1 I got error 20. No matter what I do I either get error 21 with custom ipsw or error 20 if I do...

Thanks Simond, I tried your instruction but now I am getting error 20 instead of 21. I bought new USB cable but there is no change this is weird I am not sure what else to try. Any more help is much...

I am trying to downgrade my phone so I can do untethered JB. I saved SHSH with Ifaith before I upgraded to 4.3.5 as they were not available with TU. The reason why I restored to 4.3.5 was because I...

Thanks Ashert for the info, but the trouble is I am getting this error after I put the phone in DFU mode and start the restore with Itunes and the custome ISPW.

Thanks Solomon,
I changed the computer and I was able to get into DFU and run Ifaith to download shsh for 4.3.3. Now I have another problem, I tried to load the built firmware I did with the ifaith...

The phone is not on contract and I am trying to unlock it but I am unable to even go to DFU mode.
This is weird I have 3gs 4.3.3 and I am using redsn0w but can't do the DFU.
I installed Cydia from...

Thanks for your reply, does the phone have to be unlocked if I dumb SHSH using the Ifaith. Also would the firmware remains original or there will be anything installed on the phone. I want to keep...

Hi,
can someone tells me if I can save SHSH files with Ifaith? Iphone 3gs with 4.3.3, Tyny Umbrella and Cydia didn't save them not available.
Thanks for the help in advance.

Thanks for your info,
everything works as you described it except when you get to tinyumbrella it won't see the iphone so I am not able to kick out from recovery mode very strange. Although Itunes...

Please help, when I get error 1015 on itunes after a restore I am not even able to get the phone to turn on so step one doesn't apply to me.
Any help is really appreciated.
The trouble is no light...