Can't use copy mode M605 S2 via back USB port

Snapmaker J1/J1s
4

Here are my actual findings:

  1. M605 S2 command works via USB with FW v2.3.5, the oldest available FW. Any next FW (started v2.4.8 on screen/ v2.1.28 via USB) does not work correctly with M605 S2 command. (Update: The older FWs are no more available for download but I can share it.)
  2. Any other modes (S0, S3 tested) seems to be OK.
  3. OSS versions of FW started as v 2.2.11 doesn’t work as well.
    Can local staff check which change (v2.3.5/v2.4.8) can be the key issue here?

Note: Similar issue has Marlin itself (but with S2 and S3 modes of M605 command). One possibility is that this issue is “imported” from Marlin.

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