Yeah, I managed to connect to the board with PSTool. Here is the schematic which I built to do the conversion, it is based on LME49721. If you want to connect this output to an amplifier you have to transform the differential output to a single ended output, because most of the amplifiers have one input for each channel and a common ground (L+R). The CSR8645 has a differential audio output which means that there is two output for each channel (LP+LN and RP+RN). Then you can write back the changed dump file using the methods mentioned above. Instead you should write to a file, before and after changing the settings, and then compare the two files and copy the changed keys to the original dump file. But according to some info from different forums this program shouldn’t be used to write directly to the device (‘Write Device’ button), because it will overwrite some data on the device, or it just writes only a subset of the data, and so it can brick your module. The ROM Config tool is more user friendly and has more settings than the PSTools.
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