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Changing System Software Versions
Using TFTP to upgrade or downgrade
MAX Administration Guide
4-5
!
Caution:
A MAX unit’s internal flash storage is limited. Use the
tsave -m
command to
assure that the configuration you save is as small as possible. You must retain the saved
configuration file permanently. You will need this file if it ever becomes necessary to revert
back to the earlier version after you upgrade the unit to TAOS 9.0. The file you save with the
Tsave
command contains all the passwords in clear text. Move this file from the TFTP
directory to a secure location after the upgrade procedure is complete.
4
Enter the following command
tloadcode
hostname filename
where
hostname
is the name or IP address of your TFTP server, and
filename
is the
name of the system software on the server (relative to the TFTP home directory).
For example, the command
tloadcode tftp-server ebixk.m60
loads
ebixk.m60
into flash memory from the machine named
tftp-server
.
5
Enter the following command to save your configuration to flash memory:
> fsave
Use the command immediately after executing the
tloadcode
command.
6
Enter the following command:
> nvramclear
After the unit clears NVRAM memory, the unit automatically resets itself two times.
This completes the upgrade to TAOS 9.0.
After installing TAOS 9.0 you will have a smaller amount of available memory than you had
with the previous TAOS release. The software files stored on the flash card have gotten bigger
and therefore require more memory. As new features are added to TAOS, the amount of
memory used by the operating system grows. Therefore, the units running later versions of
TAOS report less available memory. The reduced available memory is not a cause for concern.
Using TFTP to downgrade
To downgrade system software, you must follow the same steps as for upgrading TAOS, with
one exception. Instead of using the
fsave
command, as described in step 5 in “Using TFTP to
upgrade,” enter the following command to restore the compatible configuration to flash
memory:
trestore -f
hostname savedConfig
where
hostname
is the name or IP address of your TFTP server, and
savedConfig
is the
compatible configuration on the server (relative to the TFTP home directory).
For example, the command
trestore -f tftp-server Config803