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I had the same sort of thing happen with my JBL once, after I accidentally hit the
landscape key while reading. It would just keep counting up the pages even after it
had passed the number of pages in the book. It would go back to the main menu from
the "Cancel" key. After a few tries with it just recounting, just let it run and it eventually
quit and I could return to portrait mode and it was good from then on.
If yours is getting slow with it fully charged, you might want to try some of these
maintenance steps to clear up your flash memory and restore your device to the factory
settings: (Since you have the JB, not the JBL, make sure the internal battery is fully
charged.)
Make sure you have a fresh set of batteries in your JBL then:
You should remove any SD card from your JBL and connect the USB cable to backup your
JBL's internal memory, to a folder on your PC's hard drive. There should be a new drive
letter for your JBL's internal memory on your PC now. (If you had an SD card in the JBL,
there would also be a new drive letter for that.)
It is much better to have a USB 2.0 SD/Media Card reader/writer connected to your PC
and work with your SD cards using that, but if all you have is the JBL it is possible
to use it to make your update/repair SD card.
Reformatting the JBL's internal memory to FAT32 is a good idea and running ChkDsk on it
while you have the JBL connected to your PC with the USB cable is a good idea as well.
After the internal memory is cleaned up you would copy the contents you saved earlier
back onto your device.
If you can get to the logo screen then you should be able to do this:
First if you only have one SD card then you will want to back it up to a folder on your
PC's hard drive.
Format an SD card for use during the update of the firmware. (I still use FAT16 for this
although I understand that FAT32 works as well.) The formatting will insure a clean card
and root directory into which the three update folders go.
Be sure to use a firmware update with all three folders to make the SD card. Insert the
SD card into the JBL.
Make sure the USB cable is not connected at this point.
Then you go to the Diagnostics Menu built into the JBL, it is here that you can do the
#13 - Reflash NOR and the #7 - restore factory defaults
To enter the diagnostics screen:
Reset the device. Then hold down three buttons. They are: "on/off" "zoom" and "menu".
When you see the jetBook screen let go of "on.off". Keep holding the "zoom" and "menu"
keys until you see a 16 item screen. It's tricky, so it may take a couple of tries.
Then you can reflash the NOR Memory and restore the JBL to factory defaults.
After that is done reset the JBL.
That should leave you with a clean, smooth running device.
It will also fix that book loading issue.
Luck;
Ken
P.S. If that seems like too much, you could try renaming the ebook file and loading that.
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