New Hardware revision of SwyxPhone L640 requires firmware V2 R0.35.4 (kb4214)

The information in this article applies to:

  • SwyxWare v6.20 Maintenance Pack 1
  • SwyxWare v7.00
  • SwyxPhone L640

[ Summary | Information ]


A new hardware revision of the SwyxPhone L640 requires a new Firmware version V2 R0.35.4. Please find information about how you can get this version  from and which phones are concerned.


Starting from 01.01.2011 Swyx will ship all SwyxPhone L640 with a new firmware version V2 R0.35.4. This new firmware is required because of a hardware change at the SwyxPhone L640. For better identification of the new hardware revision these phones will include a relevant information flyer.

This firmware version can also be used by L640 with older hardware revisions.
Optionally it can also be used for SwyxPhone L615 and L620 but is not required there.

Attention: Downgrading a phone of the new hardware revision to an earlier firmware version than V2 R0.35.4 will lead to the situation that some functions are not working probably. Therefore to avoid this please update the firmware update configuration of the SwyxWare Administration software following these instructions.

Where to get the firmware files of version V2 R0.35.4 for SwyxPhone L615, L620 und L640 from:

If you are using this ftp-server to distribute the firmware to your phones, just go to the firmware-update-dialog of your SwyxWare administration and press the Get-Button.

If you are used to distribute the firmware using an private FTP-server (not, please update your files with the ones you find at the mentioned ftp-address and press the Get-Button in the firmware-update-dialog of your SwyxWare administration.

To use this new firmware also a new PhoneManager service ist required.

PhoneMgr- & firmware update to support L615 and new hardware revision of L640 (v6.20) (kb4156)


How to find out which phone is concerned:

Look onto the back of the phone. If you find one of the numbers below, your phone should be run with the firmware version V2 R0.35.4 or later.

  • S3817-S7402-D101-21 (L640 ice blue)
  • S3817-S7402-D103-22 (L640 lava)
  • S3817-S7402-B101-13 (L640G ice blue)
  • S3817-S7402-B103-14 (L640G lava)


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