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It's a type of firmware (like a software) with version of 4.2.1, including multitasking back-grounding in iOS 4 with extra bug fix
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Related questions
Are there any music apps compatible with ios 4.2.1?
There a quite a few good music apps that can be installed with the IOS 421. You can get the music apps like Google Play Music, Sound cloud, Tango and Podcast.
What are the factors of 421?
The positive integer factors of 421 are: 1, 421
What are the prime factors of 421?
The only prime factor of 421 is 421.
What is 0.421 as a fraction?
0.421 as a fraction is 421/1000.It is 421/1000.
What is 421 in roman numerals?
421 = CDXXI
What is the estimated difference of 862 and 421?
500
What is 421 plus 136.25?
421 + 136.25 = 557.25
Is 421 prime or composite?
421 is a prime number.
Do you get iOS 4.0.2 when you update your iPod to iOS 4.1?
You do not get iOS 4.0.2 when you update an iPod to iOS 4.1. iOS 4.0.2 is an earlier version and precedes iOS 4.1. The next version after iOS 4.1 will be iOS 4.2.
What is 421 divided by 6?
70.1667
What is the product of 6 and 421?
6 x 421 = 2,526
What is 239 add 182?
421
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