Battery issue after upgrading to iOS 6 on iTouch 4G

I did and upgrade of my iTouch 4G to new released iOS 6 and i discovered that the battery draining very fast even in stand-by mode, it takes couple of hours for battery to drain its energy to zero, i did a restore of my iPod using iTunes and pointed iPod as new device, but it has no effect still, i tryed to downgrade to previous iOS 5.1.1 and failed to do that, i am still wondering why new iOS draining my batter that fast? Befor that my iPod worked for days in stand-by in couple in listening music for 1 or 2 hours per day, but now is really a disaster, any ideas?
Thanks
Message was edited by: Apelsincheg

Using the battery level meter in this manner is comparable to using your car's fuel gauge to calculate miles per gallon. The only thing that matters is the total amount of operating time from full charge to auto-shutdown.
Use the wall-mount charger that came with the iPad and charge overnight. Admittedly the labeling is hard to read but, if you use a magnifier and squint your eyes, you'll see "Output 5.1V, 2.1A." The symbol between volts and amps is the symbol for DC. Do NOT use an iPhone charger. Do NOT use an iPod charger. Then, operate it normally until auto shut-down (ignore any low level alerts that may appear). An irony is that doing that test to determine the total operating time is also the exact procedure necessary to calibrate the battery level meter..
I'm not claiming that you do not have a problem. I am stating, however, that we don't yet know whether or not a battery problem exists.
According to Apple:
Use Your iPad Regularly
For proper reporting of the battery’s state of charge, be sure to go through at least one charge cycle per month (charging the battery to 100% and then completely running it down).
Elsewhere, Apple elaborates and explains that two half-discharges (or four quarter-discharges, etc.) equals one full discharge.
I'm not saying that you don't have a problem. However, I am saying that we don't know.

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rajivrp wrote:
Hi,
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Try This...
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Reset ( No Data will be Lost )
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http://support.apple.com/kb/ht1430
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If no joy...
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http://support.apple.com/kb/HT1414
Make sure you have the Latest Version of iTunes (v11) Installed on your computer
iTunes free download from www.itunes.com/download
rajivrp wrote:
- Is there any way I can go back to previous version ...
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------------------ show diag ------------------
Slot 0:
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EEPROM contents at hardware discovery:
PCB Serial Number        : JAF1309ADDT
Hardware Revision        : 1.0
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Board Revision           : B1
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RMA Number               : 0-0-0-0
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0x20: 00 00 00 00 04 00 88 00 00 00 00 CB 94 43 37 32
0x30: 30 30 2D 56 53 41 20 20 20 20 20 20 20 20 20 20
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1) FDP image
Field-programmable devices (FPDs) are hardware devices implemented on router cards that support separate software upgrades. An FPD image package is used to upgrade FPD images
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diesel vdub wrote: With every iOS update there is an extremely small minority of users (less than 1%) that seem to experience problems and cannot phathom that the issue is not affecting millions and is not widespread. Apparently when the issue affects you personally it's impossible to accept that millions and millions of users are not experiencing the same problems or accept that the issue is with your device specifically.
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