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The new 0x26370x00 firmware version has more strict requirements for command parsing and apparently deCONZ serial protocol documentation misses some of information dresden-elektronik/deconz-rest-plugin#3260 (comment)

Fix the version() command by sending additional four 0x00 bytes in the version requests.

@Adminiuga Adminiuga added the bug Something isn't working label Sep 15, 2020
@Adminiuga Adminiuga merged commit e5d2fe8 into zigpy:dev Sep 15, 2020
@Adminiuga Adminiuga deleted the fixes/cmd-version branch September 15, 2020 15:41
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manup commented Sep 15, 2020

Sorry for the inconvenience, the Bug is actually in the firmware wrongly assuming these 4 extra bytes for the request – which is not described in the protocol docs.

I'll update the firmware tomorrow (so it accepts both variants to not mess around with existing setups).

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I just went by what deCONZ 2.5.80 was doing for version command and noticed it was sending those 4 bytes and assumed the doc was incorrect.

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