we want to upgrade our WLCs from version 4.0.217 to 4.1.171. Two WLCs are now already upgraded, but we had problems to upload the new firmware to the WLC. We are worked with the CLI and used the "TFPD32" programm.
The upload of the new software breaks several times down, after 20 or 30 attempts the upload are completed.
This errors messages are displayed in the TFPD32:
Ack block 108 ignored (received twice) [04/06 15:56:17.288]
File <AIR-WLC4400-K9-4-1-171-0.aes> : error 10054 in system call recv An existing connection was forcibly closed by the remote host. [04/06 15:56:17.288]
Mit freundlichen Gruss