I do not remember what FW was running on my PW before i updated. But the only thing that changed is the FW. I always sideload my books (Airplane Mode is always on and my device was not connected to any WIFI network for the last 3 years). And it is not Jail Broken.
If i find the time i will do some testing this week. My Mothers PW (the same as mine and bought at the same time) is still running on old FW. I will charge both devices up to 100% then read on both devices for 2 hours and measure the battery consumption. Then switch the batterys and do the same test. This way i can make sure it is not the battery. I do not expect the battery but want to be 100% sure.
I didnīt want to sound paranoid but it looks like Planned obsolescence.
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