A RLM firmware update failure can occur for a number of reasons. You can troubleshoot a firmware failure by searching for EMS events.
You can troubleshoot a firmware failure by searching for EMS events titled as following: [rlm.orftp.failed:warning]: RLM firmware update failed, (reason)
The following error message indicates that the firmware update failed due to a communication error: rlm.orftp.failed:warning]: RLM firmware update failed: ORFTP couldn’t send info.symlinks to RLM.