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[EOL/EOE] [ScreenOS] How to determine Bootloader version on ISG and NS-5000 devices



Article ID: KB9446 KB Last Updated: 18 Mar 2021Version: 6.0
Note: A product listed in this article has either reached hardware End of Life (EOL) OR software End of Engineering (EOE). 
Refer to End of Life Products & Milestones for the EOL, EOE, and End of Support (EOS) dates.

This article explains how to determine the version of bootloader on ISG and NS-5000 devices.

  • How to check bootloader version.
  • What is the current bootloader version running in the firewall?
  • How to determine the bootloader version in ScreenOS.

On the ISG and NS-5000 devices, the bootloader version can be obtained using the command 'get envar'.


ISG1000-> get envar
run_image=default (screenos_image)
last_reset=2019-09-16 23:58:07 by netscreen
.hash-seg=6 (1377378416)

The boot loader version can also be determined from issuing the command 'get system'.


ISG1000-> get sys
Product Name: NetScreen-ISG1000
Serial Number: 0133000000000258, Control Number: 00000000
Hardware Version: 3010(0)-(04), FPGA checksum: 00000000, VLAN1 IP (
Software Version: 6.3.0r25.0, Type: Firewall+VPN
BOOT ROM Version: 1.1.0
OS Loader Version: 1.0.3
Compiled by build_master at: Thu Jan 4 23:54:23 PST 2018
Base Mac: 0010.dbc0.9500
File Name: default (screenos_image), Checksum: 301c281d
, Total Memory: 1024MB
Modification History:
2021-03-12: article reviewed and marked as EOL/EOE
2020-10-12: Updated example output to new 6.3 firmware version.

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