At first thanks for you help Chris & Markus! 
I’m actually using the development version (2.3.0.201804022210) you linked, otherwise I wouldn’t be able to control the lamella tilt at all. 
Is there a way for me to check if the database is configured appropriately?
Just for you information, my devices are actually FGR222 (device type = 302) with firmware version 25.25.
Is it possible that this implementation is only used for the FGRM222 (device type = 301)?
<node>
<homeId>0xf23a4ce0</homeId>
<nodeId>2</nodeId>
<version>4</version>
<manufacturer>0x10f</manufacturer>
<deviceId>0x1000</deviceId>
<deviceType>0x302</deviceType>
<listening>true</listening>
<frequentlyListening>false</frequentlyListening>
<routing>true</routing>
<security>false</security>
<beaming>true</beaming>
<maxBaudRate>40000</maxBaudRate>
<sleepDelay>1000</sleepDelay>
<nodeInformationFrame>
<commandClass>COMMAND_CLASS_MULTI_CHANNEL_ASSOCIATION</commandClass>
<commandClass>COMMAND_CLASS_MANUFACTURER_SPECIFIC</commandClass>
<commandClass>COMMAND_CLASS_VERSION</commandClass>
<commandClass>COMMAND_CLASS_CONFIGURATION</commandClass>
<commandClass>COMMAND_CLASS_ASSOCIATION</commandClass>
<commandClass>COMMAND_CLASS_POWERLEVEL</commandClass>
<commandClass>COMMAND_CLASS_METER</commandClass>
<commandClass>COMMAND_CLASS_SWITCH_MULTILEVEL</commandClass>
<commandClass>COMMAND_CLASS_SENSOR_MULTILEVEL</commandClass>
<commandClass>COMMAND_CLASS_SWITCH_BINARY</commandClass>
<commandClass>COMMAND_CLASS_MANUFACTURER_PROPRIETARY</commandClass>
<commandClass>COMMAND_CLASS_PROTECTION</commandClass>
</nodeInformationFrame>
<associationGroups class="concurrent-hash-map">
<entry>
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<index>1</index>
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<endpoints class="concurrent-hash-map">
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<int>0</int>
<endPoint>
<deviceClass>
<basicDeviceClass>BASIC_TYPE_ROUTING_SLAVE</basicDeviceClass>
<genericDeviceClass>GENERIC_TYPE_SWITCH_MULTILEVEL</genericDeviceClass>
<specificDeviceClass>SPECIFIC_TYPE_CLASS_B_MOTOR_CONTROL</specificDeviceClass>
</deviceClass>
<endpointId>0</endpointId>
<secureCommandClasses/>
<supportedCommandClasses class="concurrent-hash-map">
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<commandClass>COMMAND_CLASS_PROTECTION</commandClass>
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<localProtection>UNPROTECTED</localProtection>
<localProtection>PROTECTED</localProtection>
</localModes>
<rfModes>
<rfProtection>UNPROTECTED</rfProtection>
<rfProtection>NORFCONTROL</rfProtection>
</rfModes>
</COMMAND__CLASS__PROTECTION>
</entry>
<entry>
<commandClass>COMMAND_CLASS_MULTI_CHANNEL_ASSOCIATION</commandClass>
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<version>2</version>
<instances>1</instances>
<versionSupported>2</versionSupported>
<maxGroups>2</maxGroups>
</COMMAND__CLASS__MULTI__CHANNEL__ASSOCIATION>
</entry>
<entry>
<commandClass>COMMAND_CLASS_SWITCH_MULTILEVEL</commandClass>
<multiLevelSwitchCommandClass>
<version>3</version>
<instances>1</instances>
<versionSupported>3</versionSupported>
<switchTypePrimary>CLOSE_OPEN</switchTypePrimary>
<switchTypeSecondary>DOWN_UP</switchTypeSecondary>
<isGetSupported>true</isGetSupported>
</multiLevelSwitchCommandClass>
</entry>
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<commandClass>COMMAND_CLASS_MANUFACTURER_SPECIFIC</commandClass>
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<version>1</version>
<instances>1</instances>
<versionSupported>1</versionSupported>
<initSerialNumber>false</initSerialNumber>
<deviceManufacturer>271</deviceManufacturer>
<deviceType>770</deviceType>
<deviceId>4096</deviceId>
</COMMAND__CLASS__MANUFACTURER__SPECIFIC>
</entry>
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<commandClass>COMMAND_CLASS_SWITCH_BINARY</commandClass>
<COMMAND__CLASS__SWITCH__BINARY>
<version>1</version>
<instances>1</instances>
<versionSupported>1</versionSupported>
<isGetSupported>true</isGetSupported>
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<versionSupported>1</versionSupported>
<configParameters>
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<int>32</int>
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<index>32</index>
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<index>33</index>
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<int>44</int>
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<size>1</size>
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</configurationParameter>
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<int>13</int>
<configurationParameter>
<index>13</index>
<size>1</size>
<value>1</value>
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</configurationParameter>
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<int>14</int>
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<int>50</int>
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<index>50</index>
<size>1</size>
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<writeOnly>false</writeOnly>
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<int>22</int>
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<index>22</index>
<size>2</size>
<value>240</value>
<readOnly>false</readOnly>
<writeOnly>false</writeOnly>
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<int>29</int>
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<index>29</index>
<size>1</size>
<value>0</value>
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<writeOnly>false</writeOnly>
</configurationParameter>
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<int>30</int>
<configurationParameter>
<index>30</index>
<size>1</size>
<value>2</value>
<readOnly>false</readOnly>
<writeOnly>false</writeOnly>
</configurationParameter>
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<int>31</int>
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<index>31</index>
<size>1</size>
<value>0</value>
<readOnly>false</readOnly>
<writeOnly>false</writeOnly>
</configurationParameter>
</entry>
</configParameters>
</COMMAND__CLASS__CONFIGURATION>
</entry>
<entry>
<commandClass>COMMAND_CLASS_BASIC</commandClass>
<COMMAND__CLASS__BASIC>
<version>1</version>
<instances>1</instances>
<versionSupported>1</versionSupported>
<isGetSupported>true</isGetSupported>
</COMMAND__CLASS__BASIC>
</entry>
<entry>
<commandClass>COMMAND_CLASS_SENSOR_MULTILEVEL</commandClass>
<COMMAND__CLASS__SENSOR__MULTILEVEL>
<version>2</version>
<instances>1</instances>
<versionSupported>2</versionSupported>
<sensors>
<entry>
<multilevelSensorType>POWER</multilevelSensorType>
<multilevelSensor>
<sensorType>POWER</sensorType>
<initialised>true</initialised>
</multilevelSensor>
</entry>
</sensors>
<isGetSupported>true</isGetSupported>
</COMMAND__CLASS__SENSOR__MULTILEVEL>
</entry>
<entry>
<commandClass>COMMAND_CLASS_ASSOCIATION</commandClass>
<COMMAND__CLASS__ASSOCIATION>
<version>2</version>
<instances>1</instances>
<versionSupported>2</versionSupported>
<maxGroups>3</maxGroups>
</COMMAND__CLASS__ASSOCIATION>
</entry>
<entry>
<commandClass>COMMAND_CLASS_METER</commandClass>
<COMMAND__CLASS__METER>
<version>2</version>
<instances>1</instances>
<versionSupported>2</versionSupported>
<meterType>ELECTRIC</meterType>
<meterScales>
<meterScale>E_W</meterScale>
<meterScale>E_KWh</meterScale>
</meterScales>
<canReset>true</canReset>
<isGetSupported>true</isGetSupported>
<isSupportRequestSupported>true</isSupportRequestSupported>
</COMMAND__CLASS__METER>
</entry>
<entry>
<commandClass>COMMAND_CLASS_POWERLEVEL</commandClass>
<COMMAND__CLASS__POWERLEVEL>
<version>1</version>
<instances>1</instances>
<versionSupported>1</versionSupported>
<powerLevel>0</powerLevel>
<powerTimeout>0</powerTimeout>
</COMMAND__CLASS__POWERLEVEL>
</entry>
<entry>
<commandClass>COMMAND_CLASS_NO_OPERATION</commandClass>
<COMMAND__CLASS__NO__OPERATION>
<version>1</version>
<instances>1</instances>
<versionSupported>1</versionSupported>
</COMMAND__CLASS__NO__OPERATION>
</entry>
<entry>
<commandClass>COMMAND_CLASS_VERSION</commandClass>
<COMMAND__CLASS__VERSION>
<version>1</version>
<instances>1</instances>
<versionSupported>1</versionSupported>
<libraryType>LIB_SLAVE_ENHANCED</libraryType>
<protocolVersion>3.52</protocolVersion>
<applicationVersion>25.25</applicationVersion>
</COMMAND__CLASS__VERSION>
</entry>
</supportedCommandClasses>
</endPoint>
</entry>
</endpoints>
<nodeNeighbors>
<int>1</int>
<int>3</int>
</nodeNeighbors>
<lastReceived>2018-04-03 16:49:12.281 UTC</lastReceived>
</node>
I was using the OH 1 Z-Wave binding with the Fibaro proprietary reports (shutter position & lamella tilt values) since 2016.