Updating iphone 4 baseband tiny umbrella
Így ezzel meg tudja akadályozni, hogy egy korábbi verziót visszatehess, hiszen az i Tunes nem fogja tudni testre szabni, és így a készülék nem fogadja el a korábbi firmware-t.
If your request is to restore to firmware that is not current, Apple denies the request by not sending a digital signature back to i Tunes, and the restore process comes to a halt with an error.
The tech giant will take care of the issue and offer the better solution to it.
Stay connected with us for more such handy tips and feel free to shoot your valuable feedback in the comments as well.
While the i Phone 3G doesn't have an ECID, Apple must still approve restoring to i OS 4.x firmware when requested.
This is how the ECID comes into play: When you want to restore your i Phone you connect it to the i Tunes program with the USB sync cable, you click the restore button and a restore request is sent to Apple (along with your ECID).