Downgrade of unit’s bootrom version from 10.1.18T215 to 10.1.13T215

Smiley — Thu, 13 Jul 2023 09:38:36 GMT

To downgrade the unit’s bootrom version from 10.1.18T215 to 10.1.13T215 and firmware version from SPR8090j to SPR08080b

Unit firmware version details before downgrade:

#Show version

UNIT 1: compiled on Jan 2 2021 at 21:08:45 labeled as SPR08090j

(33554432 bytes) from Primary SPR08090j.bin (UFI)

SW: Version 08.0.90jT213

Compressed Primary Boot Code size = 786944, Version:10.1.18T215 (spz10118)

Compiled on Mon Jul 20 08:53:15 2020

#Show flash

ICX7450

Compressed Pri Code size = 33554432, Version:08.0.90jT213 (SPR08090j.bin)

Compressed Sec Code size = 33554432, Version:08.0.90jT213 (SPR08090j.bin)

Compressed Pri Boot Code size = 786944, Version:10.1.18T215 (spz10118)

Compressed Sec Boot Code size = 786944, Version:10.1.18T215 (spz10118)

Code Flash Free Space = 1626873856

#Show boot-monitor

ICX7450

Current Version: 10.1.18

Recommended Version: 10.1.18

Steps To Downgrade Boot Rom Version:

Bootrom version will be downgraded with the software version (Non UFI image)

Upload SPR8090j Non UFI image and boot the unit with this image:

ICX7450 #copy tftp flash <tftp_server_ip> SPR08090j.bin primary

Upload first software image SPR8080b.bin and boot the system with this image:

ICX7450 #copy tftp flash <tftp_server_ip> SPR08080b.bin primary

Once the device is booted with this image, upload the bootrom version with the below command:

ICX7450 #copy tftp flash <IP_Address> spz10113.bin bootrom

ICX7450 #Load to buffer (8192 bytes per dot)

...............

SYNCING IMAGE TO FLASH. DO NOT SWITCH OVER OR POWER DOWN THE UNIT (8192 bytes per dot) ...................................................................................................

TFTP to Flash Done.

After saving configuration and reload, firmware is downgraded.

ICX7450 #Show version

UNIT 1: compiled on Sep 8 2018 at 00:20:44 labeled as SPR08080b

(29815996 bytes) from Primary SPR08080b.bin

SW: Version 08.0.80bT213

Compressed Boot-Monitor Image size = 786944, Version:10.1.13T215 (spz10113)

Compiled on Tue Jul 29 10:22:26 2018

ICX7450 #show flash

Compressed Pri Code size = 29815996, Version:08.0.80bT213 (SPR08080b.bin)

Compressed Sec Code size = 33554432, Version:08.0.90jT213 (SPR08090j.bin)

Compressed Boot-Monitor Image size = 786944, Version:10.1.13T215

Code Flash Free Space = 1626591232

ICX7450-48 # show boot-monitor

Current Version: 10.1.13

Recommended Version: 10.1.13

Note: Alternate way to downgrade the firmware by using Manifest file

Link: https://support.ruckuswireless.com/documents/3448-fastiron-08-0-95-ga-software-upgrade-guide

-----Above link describes an example of firmware downgrade by using Manifest file from UFI to non UFI.

-----Apart from the firmware downgrade from SPR8090j to SPR08080b (example taken above), this procedure can be used for downgrade of other firmware versions as well.

topic Downgrade of unit’s bootrom version from 10.1.18T215 to 10.1.13T215 in RUCKUS Self-Help

Downgrade of unit’s bootrom version from 10.1.18T215 to 10.1.13T215