can i - firmware upgrade question

[ShivamD]

can i upgrade my iphone 4 on firmware 4.02 to 4.1 while 4.2 is out?
i tried doing it by pressing the option key on my mac and clicking restore and choosing the 4.1 firmware but it gives me an error saying " the iphone cannot be restored at this time because the iphone software update server could not be contacted or is temporarily unavailable"

 

[chestvrg]

can i upgrade my iphone 4 on firmware 4.02 to 4.1 while 4.2 is out?
i tried doing it by pressing the option key on my mac and clicking restore and choosing the 4.1 firmware but it gives me an error saying " the iphone cannot be restored at this time because the iphone software update server could not be contacted or is temporarily unavailable"

I'm having a similar issue, I want to downgrad from 4.2.1 to 4.0.2 so the next time I have to do a restore via itunes it will not un-jailbreak it.

 

[maturola]

can i upgrade my iphone 4 on firmware 4.02 to 4.1 while 4.2 is out?
i tried doing it by pressing the option key on my mac and clicking restore and choosing the 4.1 firmware but it gives me an error saying " the iphone cannot be restored at this time because the iphone software update server could not be contacted or is temporarily unavailable"

Yes you can if you got SHSHs for 4.1 saved. If you don't them you cannot.

I'm having a similar issue, I want to downgrad from 4.2.1 to 4.0.2 so the next time I have to do a restore via itunes it will not un-jailbreak it.

this is just no Possible, Jailbreak is a software hack, if you overwrite the software (firmware upgrade) the Software hack will be gone every time. So Everytime you upgrade/update your JB will be gone no matter what version you are (You can use a custom firmware to upgrade to an Already jailbroken firmware, but technically your old JB will be gone, you just replacing it with an already fresh jailbroken fimrware)

 

[Applejuiced]

I'm having a similar issue, I want to downgrad from 4.2.1 to 4.0.2 so the next time I have to do a restore via itunes it will not un-jailbreak it.

You need shsh blobs to downgrade or restore any i4 or 3GS to any firmware but the latest one out. And every time you restore thru iTunes to official firmware you will lose your jb and be back to stock version.

 

[ShivamD]

Yes you can if you got SHSHs for 4.1 saved. If you don't them you cannot.

okay so i checked on tinyumbrella i dont have the 4.1 shsh saved but i read somewhere that i can retrieve the 4.1 shsh through cydia, is this possible?

 

[Applejuiced]

okay so i checked on tinyumbrella i dont have the 4.1 shsh saved but i read somewhere that i can retrieve the 4.1 shsh through cydia, is this possible?

No
TU retrieves them from cydia, so if tinyumbrella cant retrieve them they are not saved on cydias server.

 

[f4780y]

Yes you can if you got SHSHs for 4.1 saved. If you don't them you cannot.

okay so i checked on tinyumbrella i dont have the 4.1 shsh saved but i read somewhere that i can retrieve the 4.1 shsh through cydia, is this possible?

No, sorry. Tinumbrella is telling you you do not have them saved with Cydia. Tinyumbrella downloads your blobs from Cydia.
There is no way to get round the system.

 

[maturola]

okay so i checked on tinyumbrella i dont have the 4.1 shsh saved but i read somewhere that i can retrieve the 4.1 shsh through cydia, is this possible?

You cannot retried what you don't have, yes it is possible to retrieve (previously saved) SHSHS from Cydias server. This means that Cydia or yourself save the SHSH and stored them on Cydia server. So you can retrieve them when you need them. But they need to be generated by Apple at some point. If you Never saved 4.1 SHSHs you cannot save them anymore.