DAC2 Pro + DSP + Raspberry Pi OS DSP Fail After Reboot

Recently I bought the following models. It works just after the first installation, but no sound after rebooting.



After rebooting, I could not install the DSP profile because following error was returned:

Failed to install DSP profile dsp-addon-96-13.xml

Disabling shairport-sync, sigmatcpserver, start sigmatcpserver manually, then install dsp profile yields following error log.

sudo /usr/local/bin/sigmatcpserver -v

DEBUG:root:writeXbytes 49152 1116
ERROR:root:exception during EEPROM write: [Errno 110] Connection timed out
ERROR:root:[Errno 110] Connection timed out
Traceback (most recent call last):
  File "/usr/local/lib/python3.7/dist-packages/hifiberrydsp/server/sigmatcp.py", line 448, in write_eeprom_content
    SigmaTCPHandler.spi.write(addr, data)
  File "/usr/local/lib/python3.7/dist-packages/hifiberrydsp/hardware/spi.py", line 79, in write
TimeoutError: [Errno 110] Connection timed out
DEBUG:root:Sending 1 bytes answer to client

Executing "dsptoolkit reset" makes it possible to output sound from DAC, but still no DSP profile uploading is possible.


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