Please help me.

 

What is the question?

 

My current DCU is China's version of dcu I'd is 19LDL2CN-EBPD。As a result, I can't upgrade my car play at the dealer. He told me that I need to revert to the original DCU to help me upgrade my car play. Otherwise, there's nothing he can do

 

我想知道如何刷回原始的DCU，即音频固件。 roughly is,
I want to know how to flash back to the original DCU, which is the audio firmware.

good luck

 

Hmmm, his title is written in English and his comment is English, but his question is in Chinese??