Question about Car Audio & Video
The only alternative is trying all 99999 codes, if this dont work, you
will need to contact Sony Either via the Web or their Customer Service
line to get the Manual Reset Code for your specific model. Keep in mind that each Sony has a
different unlock code so the Master may not work on certain models as is
the problem with yours.
Additionally, could try the key combinations in here, they can unlock some Sony model and bypass the code request.
Also, coudl try in this links:
Posted on Mar 28, 2011
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Posted on Jan 02, 2017
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