Here's a link to download the new firmware: https://www.musicteck.com/firmware-upgrade
Here's the instruction provided: Connect P6 to your computer and copy LPFWPKG.ISO file into the root directory of P6 internal storage. Hold power button 5sec to turn it off, and then 5sec to turn it back on. After the bootup it will ask you if you want to upgrade to new fw. When select Yes, it takes a few minutes and upgrade is done automatically with P6 rebooted and powered back up.
Here's the instruction provided: Connect P6 to your computer and copy LPFWPKG.ISO file into the root directory of P6 internal storage. Hold power button 5sec to turn it off, and then 5sec to turn it back on. After the bootup it will ask you if you want to upgrade to new fw. When select Yes, it takes a few minutes and upgrade is done automatically with P6 rebooted and powered back up.