> 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/products/cc-software/troubleshoot/command-centre-errors/linux-migration-fails.md).

# Linux Migration Fails

[Command Centre - Errors](/knowledge-hub/products/cc-software/troubleshoot/command-centre-errors.md) › Linux Migration Fails

| Error content                                                                             | Description                                                                                                                                                                                  |
| ----------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `BackupMain - Crypto failed(22,5) boot=0x00 id=0x2cda909586 hash pri=0 sec=0 fac=0 ubi=0` | During the Controller 6000 Linux migration (from controller firmware **v8.10 or earlier** to **v8.20 or later**), this error appears in both the Alarm Viewer and the Controller Error logs. |

It indicates the controller encountered an issue during migration. These messages are typically generated when configuration data, certificates, keysets, or communication parameters fail to load or initialise correctly on the Linux-based firmware.

## Resolution

When configuring a new Controller, **do not turn off DW 2 until the Controller run LED is in one flash**.


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