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Part 5: Roco Z21 Firmware Updates

Z21 Failure

Programming cv's on a z21

Roco z21 bug, decoder in adress 1(CV 1=1) lights don't work

Z21 and MTB DP1 Programming No15

Error Correction for 5G Communication (LDPC codes)

Loco Emergency Stop YD7001 with Z21 App

TUTORIAL Deleting locomotive address on z21 & Multimaus from Roco or Fleischmann digital model ra...

DCC Decoder won't work Try this reset!

Roco / Fleischmann Z21 Loco Programming as easy as it gets

Bafang Error 21 Code Fix
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Last Updated: August 18, 2026
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