The current image includes all Hotfixes so far, so there is no need to install them after you reflashed the firmware.
Be sure you only reflash when really needed. Flashing is no swiss army knife. It does wear out your NAND if done often.
Before you flash, make absolutely sure there is no other solution (check the I need Help-Section on these boards).
I you ever need to reflash the firmware: It's not a hard thing to do. Just be sure to follow the instructions carefully.
1. Extract the contents of this zip to root (main) directory (folder) of your FAT32-formatted SD card.
2. Make sure the pandora is turned off (remove the battery in case it crashes or doesn't turn off by using normal means).
3. Insert that SD card into pandora's first slot (it's the one closer to headphone jack).
4. Press and hold the right trigger ('R'), then turn the power on (if you have battery removed, insert it while holding R).
5. A menu should appear on screen. Select "boot from SD1" using the d-pad by pressing B or X.
6. Wait for flash process to finish. Connect the charger to be sure the battery doesn't run out while flashing. Press enter when asked to do so.
7. The device should turn off, press power (without holding R) to turn it back on.
8. It should then start it's first boot process which might take up to 15 minutes, be sure to wait for it to finish, otherwise firmware corruption might happen.