Android 13 firmware for SC668S

Hi I have an android head unit with a SC668S chip running Android 11. I noticed the product brochure states that Android 13 is also available for this chip. I would like to develop Android 13 for this head unit but cannot find the firmware anywhere.

I am a personal developer, and do not work for the original manufacturer (SPD Tech/深圳迅族科技)

Dear, customer:
Firmware is released via FTP server. Customers can download from FTP using their account.
If you don’t have the account, please share the module OC and your email address
Thanks.

Hi, I have sent this via private message.

You can share there.

Thanks.