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Smart Home Forum by FIBARO Team

Invalid checksum


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5 unsuccessfull attempts later, any help welcome...


Each time I agree and start installing the latest upadte from 5.090.17 to 5.110.15 it stops later or sooner and states "There was an error in checksum validation."


Is there a tip, a fix, or a way to downlod on the PC and install frome this verified downloaded file ?


Thanks in advance,



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Try following:

  1. Download firmware from

    Please login or register to see this link.

  2. Set your HC3 to recovery mode.
  3. In midle there should be Repair System A/B.
  4. Click repair.
  5. Choose Repair from file.
  6. Select file you downloaded in step 1.
  7. HC3 should be updating to 5.110.15 and devices + scenes should be ok.
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