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Hi guys,

I currently have an iPhone 3GS (old bootrom) on 4.2.1 running BB 06.15. I am registered on the developer connection and I have a valid developer account (the paid one); so i have access to 4.3b3 through the developer portal.

I was wondering if i could upgrade to 4.3b3 and keep my 06.15 BB ? I have read a couples stories about jailbreaking 4.3 with custom bundles, etc. Is it currently possible on an iphone 3GS ?

If yes, would it be possible to install cydia and then just re-unlock with ultrasn0w ?

Best regards, neez0

asked 11 Feb '11, 19:16

neez0's gravatar image


As far as I know, ultrasn0w will unlock 6.15.00 just fine regardless of the iOS; however I haven't heard of anybody trying. I'd be interested to hear the results!

(11 Feb '11, 19:19) gomanski gomanski's gravatar image

You need a developer licence to activate the OS. There are documents online that claim anyone can install v4.3, but they are all in error. You simply cannot install a functional version of 4.3 if you are not a registered developer. Anything that claims otherwise is flat out wrong.

(11 Feb '11, 20:20) w_sz w_sz's gravatar image

You are right, but @neez0 states "I am registered on the developer connection and I have a valid developer account."

(11 Feb '11, 20:23) gomanski gomanski's gravatar image

you just need to find a custom bundle online from someone you trust. or you can try to make your own custom bundle, but the original one from apple won't work. so good luck finding one right now.


answered 11 Feb '11, 19:42

nymkhan8's gravatar image


If i find a custom bundle, wich tool actually jailbreaks iOS 4.3 ? Edit: and since i have an old bootrom, i guest it will stay un-thetered ?


answered 11 Feb '11, 19:48

neez0's gravatar image


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Asked: 11 Feb '11, 19:16

Seen: 2,276 times

Last updated: 11 Feb '11, 20:34

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