This incompatibility is needed so connecting software is able to
differentiate between HM-CFG-LAN and HM-CFG-USB.
+**Important security information:**
+Versions before 0.101 do not correctly transmit the AES channel-mask
+to the HM-CFG-USB, which results in signature-requests not being generated
+by the device in most cases. This can lead to processing of unsigned messages
+by the host-software. If you are relying on authenticated messages
+(with e.g. aesCommReq in Fhem) from devices like door-sensors and remotes,
+you should upgrade to at least version 0.101.
+
[releases-directory]: https://git.zerfleddert.de/hmcfgusb/releases/
[hmcfgusb-HEAD-xxxxxxx.tar.gz]: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/hmcfgusb/snapshot/HEAD.tar.gz
[Homegear]: https://www.homegear.eu/
1. Compile the hmcfgusb utilities like in the hmland HowTo above
(steps 1 to 5) and stay in the directory
-2. Download the new firmware: [hmusbif.03c7.enc][]:
+2. Download the new firmware: [hmusbif.03c7.enc][] (extracted from the
+ [Firmware update tool][]):
`wget https://git.zerfleddert.de/hmcfgusb/firmware/hmusbif.03c7.enc`
3. Make sure that hmland is not running
4. Flash the update to the USB-stick:
`./flash-hmcfgusb hmusbif.03c7.enc` (You might need to use `sudo` for this)
[hmusbif.03c7.enc]: https://git.zerfleddert.de/hmcfgusb/firmware/hmusbif.03c7.enc
+[Firmware update tool]: http://www.eq-3.de/Downloads/Software/Firmware%20Update%20Tool/HM-CFG-USB-2_FW-UpdateTool-Usersoftware_V1_1_eQ-3_140619.zip
### Updating HomemMatic devices over the air (OTA) (also for CUL devices): ###