Upgrade the Bootloader

Configuration Condition

None

Table 11‑4 Upgrade the Bootloader program

Step	Command	Description
Enter the Bootloader configuration mode	None	Mandatory. After the device is powered on, press the Ctrl + C keys to enter the Bootloader configuration mode. After you enter the mode, the " RTL93xx#" is prompted.
Start the tftp service on the PC		Mandatory Copy the new bootloader version used for upgrading to the root directory of tftp, used by the device to download the version file via tftp.
Upgrade the Bootloader program	update bootloader filename ge0 local-ip-addr host-ip-addr [gatewayip] [ netmask]	Mandatory
Back up the bootloader program	bootloaderbak	Optional

Bootloader system program adopts dual-bootloader backup mode, which is divided into the master bootloader program and standby bootloader program. With the upgrade command, you can only upgrade the version of the master bootloader, while the standby bootloader program will remain unchanged.
After upgrading the Bootloader system program, use the command reset or power off to restart the device, and then, you can use the latest Bootloader system program.
After the system is loaded successfully, you can use the sysupdate command to upgrade.