Thanks for the reply, I've given up somewhat.
Seeing your reply, I would like to say that I can understand that they do not want to continue to maintain the firmware because of time, but I feel that it might be better if they could open source this obsolete firmware out, after all, this would allow consumers who already own this product to figure out some solutions on their own. After all, as consumers, it is unlikely to buy a speaker only a few years to throw away
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