Knowledge Base Article
Error (209053): Unexpected error in JTAG server -- error code 126
Description
Due to a bug in Quartus® Prime software versions 16.1, 17.0 and 17.1, the programmer may show this error when programming a volatile key into an Arria® V, Cyclone® V or Stratix® V device using a USB-Blaster download cable. This error does not occur when using a USB-Blaster II download cable to program the volatile key.
Resolution
This problem is fixed beginning with the Intel Quartus Prime software version 18.0.
Updated 26 days ago
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