Select the recommended version. Junos 12.3R12-S15 is widely considered the most stable "JTAC recommended" version for this hardware.
The upgrade process on an EX2200 takes between . The switch will reboot, and you will hear the internal fans spin at maximum velocity. Do not pull the power cord during this window. Verify Success juniper ex2200 firmware download
If your switch has IP connectivity to your management workstation, use a client like WinSCP or FileZilla to copy the file directly into the /var/tmp/ directory of the switch. Step 3: Execute the Firmware Upgrade Select the recommended version
This method is best for an already operational switch where you want to keep the existing configuration. The switch will reboot, and you will hear
Juniper EX2200 Firmware Download: Comprehensive Upgrade Guide
If you are managing a network that still relies on the venerable Juniper EX2200 series switch, you are likely facing two realities: it is a rugged, reliable workhorse for access-layer switching, but it officially reached and End-of-Engineering (EOE) years ago.