Description
If the message 'invalid compressed
format' or 'incomplete literal tree' appears during the TFTP
firmware download procedure the following items should be
investigated further:
- Verify the MD5 checksum of the firmware (see related article at
the end of this page).
- Connect the device with a crossover cable (
category 5 or above).
- Use one of the recommended TFTP servers from the following
list:
|
For Windows |
TFTPD32 V4.0
TFTPD64 V4.0
|
For Linux
(Ubuntu / Debian)
|
tftpd-hpa (5.2)
Atftpd (0.7)
|
Note that in some cases where Solarwinds was installed first, it
will install a service in the background. Since the service or
process is still running, TFTPD32/34 is unable to bind to the
port.
It’s recommended to completely uninstall Solarwind before
installing TFTPD.
Some issues are able to be resolved by enabling the 'PXE
compatibility' option on the server. Under TFTPD32 it can be
enabled via 'Settings> TFTP'. Note that this option setting may
be lost upon restart of the application in which case it should be
enabled again.
Sample error message output :
[G]: Get firmware image from TFTP server.
[F]: Format boot device.
[B]: Boot with backup firmware and set as default.
[I]: Configuration and information.
[Q]: Quit menu and continue to boot with default firmware.
[H]: Display this list of options.
Enter Selection [G]:
Enter G,F,B,I,Q,or H:
Please connect TFTP server to Ethernet port "MGMT".
Enter TFTP server address [192.168.1.168]: 192.168.1.100
Enter local address [192.168.1.188]: 192.168.1.99
Enter firmware image file name [image.out]:
FGT_100D-v400-build0665-FORTINET.out
MAC:085B0E1EC50A
#######################
Total 24912410 bytes data downloaded.
Verifying the integrity of the firmware image.
invalid compressed format (err=2)
Solution
If you still have the message after the above recommendations, the
problem might be a hardware related. Please see related articles
for hardware troubleshooting.
Related Articles
Technical Tip: Advanced procedure to format a FortiGate hard disk
Technical Tip: Formatting and loading FortiGate firmware image using TFTP
