HP A7533A - Brocade 4Gb SAN Switch Base Release Note page 59

Firmwarecommit can fail on HP StorageWorks Encryption SAN
Switch or Encryption blade with message regarding missing properties
file when upgrading to Fabric OS 6.2.0d or later 6.2.0x version.
Internal timing race condition can cause one or more F_ports or E_ports
to be brought down, leading to frame discards. Port will be brought
back online automatically at the end of the HA or firmware upgrade
operation.
In the FICON environment, some minimal frame drops occur on TI-zone
enabled ISLs during upgrading to or from FOS 6.2.0x, leading to
IFCCs (Interface Control Checks) being reported.
Fixed in Fabric OS 6.2.1
Fixed in Fabric OS 6.2.1
Fixed in Fabric OS 6.2.1
HP StorageWorks Fabric OS 6.2.1 release notes 59