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hellow my question is simple

how do i update to ios 4.2.1 keeping baseband 2.10 and without using jailbreak by greenpoison

i need upgraded os but not jailbreaked avoid battery issues ...if i can ..

i know its tiny umbrella on

itunes on use shift + update and not a shift + restore

but i need step by step information i did it once to my friend iphone 4 but now i want to do it mine but i donno how

i have ip4 btw

asked 27 Feb '11, 19:19

c0mputer's gravatar image


There's very detailed instructions at the TinyUmbrella site at:

Just stop at step 10 if you don't want to jailbreak.


answered 27 Feb '11, 20:00

Endareth's gravatar image


If you use snowbreeze 2.2.1 to upgrade it will preserve your baseband. Select baseband preservation mode if you just want complete stock firmware without baseband. Or choose simple or expert mode if you need cydia, hactivation, or custom packages...etc (they still preserve baseband). Tinyumbrella isn't needed with this tool.

However if you don't need unlock then the baseband version is irrelevant.


answered 27 Feb '11, 20:01

steve258's gravatar image



I believe OP doesn't want to jailbreak (as in "but not jailbreaked"). TinyUmbrella is the answer.

(27 Feb '11, 21:46) dhlizard dhlizard's gravatar image

Snowbreeze baseband preservation mode doesn't jailbreak the device, it just upgrades the device firmware without updating baseband, completely stock, which is exactly what op wanted if I understood correctly?

(28 Feb '11, 00:29) steve258 steve258's gravatar image

Never used it but I'm pretty sure that's incorrect ^^, Sn0wbrezze & Pwnage both jailbreak the firmware on your comp before you restore to it.

(28 Feb '11, 01:39) venusanann venusanann's gravatar image

Have a look at this:

"...what this function will do is that it will preserve the baseband of your iPhone with the custom firmware without the jailbreak."

If you had actually run snowbreeze then you'll know that when you select the "Baseband preservation mode" it says, and this is an exact quote:

"This mode ONLY preserves the iPhone's baseband. It does not Jailbreak or Unlock the actual device. All other modes still do preserve the baseband."

(28 Feb '11, 08:34) steve258 steve258's gravatar image

That is a good new feature, makes me want to find a PC to test/use it on now.

(28 Feb '11, 11:00) venusanann venusanann's gravatar image
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Asked: 27 Feb '11, 19:19

Seen: 687 times

Last updated: 28 Feb '11, 11:00

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