Bug ID 502405: BIG-IP v11.4.1 does not correctly downgrade to BIG-IP v10.2.4

Last Modified: Dec 04, 2020

Bug Tracker

Affected Product:  See more info
BIG-IP APM(all modules)

Known Affected Versions:
10.2.4, 11.4.1

Opened: Jan 22, 2015
Severity: 3-Major
Related AskF5 Article:


While downgrading from 11.4.1 to 10.2.4, BIG-IP Edge Client does not correctly connect to the BIG-IP server.


Cannot downgrade BIG-IP, or switch between a pair of BIG-IP servers with different versions.


Two unknown devices show up in Device Manager, even after manually removing them - Windows 8.1 client will not connect to BIG-IP v10.2.4. It will connect back to 11.4.1.


Uninstall 10.2.4 with CTU (for example, 11.4.1-hf4.exe) Reboot computer. Install 11.4.1 on machine by going to https:\\Big-IP.11.4.1.HF4 (a BIG-IP 11.4.1 server) and establishing a VPN tunnel Uninstall 11.4.1 with CTU (same as above) REBOOT computer. Install 10.2.4 HF4 by going to a 10.2.4 HF4 server and establishing a VPN client.

Fix Information


Behavior Change