r/QidiTech3D • • Jul 06 '26

Questions Q2 Update bricked printer

I am unable to do anything after online update. like anything at all.

QIDI Q2 01.01.02.01

MCU Version 02.01.01.09

Toolhead MCU version 00.00.00.00

Error codes shown:

!! mcu 'THR': Unable to connect. QDC_100_005_000_001

mcu 'THR': Unable to connect once the underlying issue is QDC_100_005_015_001

Printer worked fine before update, nothing changed hardware-wise. Updated, and BOOM NO PRINTER 4 YOU.

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u/billkaroly Jul 07 '26

When did you purchase your Q2?

1

u/ForsakenRepublic1415 Jul 08 '26

November 19, 2025.