HP Prime Firmware Update Problem

[DBV]

Hello,
I purchased a HP PRIME, firmware 2014 3 31 (6030) A, CAS version 1.1.0-46.
I dowloaded the HP Connectivity Kit, working properly between my pc and the HP Prime.
When i try to upgrade the HP Prime firmware, the answer is : no firmware upgrade available !
I try to write routines, programs for sea astronomical navigation purpose.
I noticed : in the Hms mode, the HP Prime refuses inputs minutes with decimal values.
I use the template key to input Hms values. Is it an other syntax, using the ° ' " by program?
I would like to find a detailed listing and/or manual with the syntax of the PPL Commands.
Thanks for your help.
Best regards,
DBV