To maintain existing installations SEH regularly offers firmware and software updates providing new features, extended protocol support, etc. The relevant files are made available for download at no charge.
This product contains software that falls under various open source licenses. The contained open source software was unchanged or modified and used in whole or in part.
The license website shows you which open source licenses are involved and you can download and view them.
Recommended software version — security update
Software version 21.0.62 completely removes PHP to address CVE-2026-109618 and CVE-2026-109619. The web-based Control Center and its backend have been reimplemented without PHP, preserving existing product functionality. The updated software has been tested by SEH and Epson.
We recommend updating existing installations to this version.
Previous software version — recovery only
Version 21.0.22 does not include the security changes provided by version 21.0.62. It remains available only as a recovery option if compatibility issues occur with the updated software and is not recommended for normal operation.
Before reverting to this version, assess the security risks and contact SEH Support for assistance.
Info:
In addition to the firmware, the download package contains the corresponding checksum and a digital signature to verify the file's integrity and authenticity. Detailed instructions for verifying both integrity and authenticity can be found in the Knowledgebase article.
