What is gzteiron in my iPhone 4

HI all can anyone please shed sum light on wot gzteiron is on my iPhone 4 it has now expired but can this be updated or shall I just remove it as it doesn't seem to be affecting my phones workin mode I'm baffled lol

Did you try to hold down power and home button for 20 seconds? If this not work. Try to put iPhone in DFU mode and try to restore via iTunes.
Step One
Open iTunes and connect the iPhone to your Mac.
Step Two
Press and hold the Home button and the Sleep/Wake button at the same time.
Step Three
After exactly 10 seconds release the Sleep/Wake button. Continue holding the home button until you iTunes pops up a message telling you that it has detected an iPhone in recovery mode.

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