NebulaFlex Switch XGS1935 Series - V4.90 Patch 3 Firmware Release

Zyxel_Melen

Zyxel Switch XGS1935 Series Release Note 

April 2026

Firmware Version on all models

(Click Hyperlink to download the firmware directly)

Zyxel XGS1935-28HP - V4.90(ACJX.3)C0

Zyxel XGS1935-28 - V4.90(ACJW.3)C0

Zyxel XGS1935-52HP - V4.90(ACJZ.3)C0

Zyxel XGS1935-52 - V4.90(ACJY.3)C0

New Feature and Enhancements

1. Optimized system stability and synchronization with Nebula to enhance overall device connectivity and management reliability.

Bug Fix

C=Cloud mode, S=Standalone mode

Bug fix

C

S

Please refer to the Download Link for more details.