Phone is very laggy

[i.Annie]

It's an iPhone 4. You need to run the TSS Server in TinyUmbrella. Did you ensure it was running while you did the shift+restore to 4.2.1?

Edit: also you ensured that your firmware version is for the iPhone 4?

[iYeow]

How could an iPhone 4 be laggy at 4.3.3, just saying

[nnfdcane]

I downloaded the firmware for iphone 4, 4.2.1 and yes the TSS was running in the background.

[i.Annie]

Quite frankly there's something wrong if an iPhone 4 is laggy

Ok so what is the exact name of the firmware you downloaded? It should begin with iPhone3,1

[nnfdcane]

iphone 4 (4.2.1/8C148)

Downloaded from iphone nerd.

[i.Annie]

Ok right but do you have the actual file name? Did you ensure the file name begins with: iPhone3,1_4.2.1

[nnfdcane]

When I click on the file I see 4361557459916-iphone3,1-4.2.1.shsh. Is that what your asking?

[i.Annie]

Yeah, that's the one. Just needed to confirm you're using the right fw version bc of the error you got.

Have you tried created a custom fw with that 4.2.1 ipsw and restoring to that?

All you do is use sn0wbreeze to create a custom 4.2.1 firmware, let sn0wbreeze set device into pwned dfu mode, run TSS Server, open iTunes, and shift+restore to the cFW