BG951A-GL: PPP does not work with BG951AGLAAR01A03 firmware

Testing modules with firmware BG951AGLAAR01A03 and found the PPP seems does not work.
Just checked the BG951AGLAAR01A03 release note and found it’s known issue:
[PPP]
The PPP connection is not working between the Linux host and the module via the
main UART port.

Is there any firmware update available for this fix?

ps.
It’s a big surprised because when we test with BG951AGLAAR02A01_JP it was working fine.
(And it’s a blocking issue now)

Sorry about that the latest firmware of BG951AGLAAR01A03 is still not fix this problem.