BOOT Upgrade Method 11 series OLT need upgrade the CFE,so it must upgrade in CFE mode. Please follow the step as below to upgrade 11 series OLT OLT console port --PC OLT MGMT----PC(tftp server) set in the same network segment,and run tftp server Reboot the OLT to keep the keyboard <Ctrl+C>,Enter the CFE mode. â‘ config OLT ip address CFE>ifconfig eth0 -addr=192.168.100.100 -mask=255.255.255.0 CFE>ifconfig ------can use this command check the ip address is config success. â‘¡Upgrade boot file CFE>flash -noheader 192.168.100.2:FD1104B_CFE_151113.bin flash0.boot â‘¢Upgrade main file (åŒé•œåƒï¼‰ CFE>flash -noheader 192.168.100.2:FD1104B_V2.4.05_180517_X000.img flash0.os CFE>flash -noheader 192.168.100.2:FD1104B_V2.4.05_180517_X000.img flash0.os2 If failed , please try it CFE>setenv -p STARTUP 'sleep 5; boot -elf -z flash0.os:FD1108S_V2.3.05_180517_X101.img' â‘£Restart the OLT to complete the upgrade CFE>reset -yes -cpu