NebulaFlex Switch XGS1935 Series - V4.90 Patch 3 Firmware Release
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Zyxel_Melen
Posts: 4,720 
Zyxel Employee
Zyxel Employee
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.
Zyxel Melen
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