> For the complete documentation index, see [llms.txt](https://help.security.gallagher.com/knowledge-hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.security.gallagher.com/knowledge-hub/command-centre-releases/release-history/supported-gallagher-command-centre-releases/command-centre-9.20-releases/9.20-maintenance-release-6.md).

# 9.20 Maintenance release 6

Enhancements in this version are as follows.

<table data-header-hidden><thead><tr><th width="103"></th><th width="495"></th><th></th></tr></thead><tbody><tr><td>Tech Ref</td><td>Description</td><td>Component</td></tr><tr><td>160093</td><td>T30 HiSec: Security Enhancement</td><td>Reader/<br>Controller</td></tr><tr><td>166086</td><td>Memory &#x26; Storage Optimization for T30 Devices</td><td>Reader/<br>Controller</td></tr><tr><td>167562</td><td>Elevator section in User Guide Vol1 to include 7000 controller</td><td>Documentation</td></tr></tbody></table>

Bug fixes in this version are as follows.

<table data-header-hidden><thead><tr><th width="104"></th><th width="499"></th><th></th></tr></thead><tbody><tr><td>Tech Ref</td><td>Description</td><td>Fixed In</td></tr><tr><td>158011</td><td>Advanced search crashing Command Centre Client - Division Filter Reliability Improvement</td><td>Server</td></tr><tr><td>158235</td><td>Operator Settings: Multi-Field Configuration Not Persisting</td><td>Server</td></tr><tr><td>163662</td><td>Idemia CAC card not working using Veridt Reader on a C7000</td><td>Controller</td></tr><tr><td>164964</td><td>F6x: HBus V2 - long serial no. input restricted by textbox</td><td>Server</td></tr><tr><td>165066</td><td>Improving system speed for a smoother experience</td><td>Server</td></tr><tr><td>165246</td><td>Better handling of time entries when daylight savings is active</td><td>Server</td></tr><tr><td>165352</td><td>Resolving startup issues caused by notification errors</td><td>Server</td></tr><tr><td>165516</td><td>Fix network configuration reporting on controller debug web page.</td><td>Controller</td></tr><tr><td>166933</td><td>Command Centre Client and Configuration Client freezing due to memory leaks</td><td>Server</td></tr><tr><td>167878</td><td>Improved Responsiveness and Stability for Duress Terminal and T20 Devices</td><td>Server</td></tr></tbody></table>


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