Car AUDIO HEAD UNIT ROM UPDATE IF POSSIBLE?

Hi...
Hope to find an update for my car audio headunit, unbranded...
Thank you in advance
My car audio spec are :

-kernel 3.4.67
-Build version - ALPS.LD_kk1. UI3.V1.6
-MCU - SM92A1. 170110.V1.1.JLY-B200-B3
Greetings.

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