Thank you @tmrobert8 for your reply!
I made some progress.
I did exactly as you suggested but no access code popped up.
Then I browsed the log and found the line
X-CERS-DEVICE-ID: MediaRemote:00-11-22-33-44-55
I used the number string as access code and went to the BD player menu
Network Settings > Media Remote Device Registration
started the registration and the thing went online! Great!
Alas, the 2 items I then configured (switch for “power on/off” and a string for “IRCC Viewing Channel Source” don’t seem to work.
The log states a problem
2019-08-19 15:19:55.895 [DEBUG] [y.internal.transports.SonyAuthFilter] - Trying to renew our authorization cookie
2019-08-19 15:19:55.971 [DEBUG] [y.internal.transports.SonyAuthFilter] - Could not renew authorization cookie: java.net.ConnectException: Connection refused (Connection refused)
I guess I’m not compltely there yet
Every time i flip the switch item mentioned above I get this
2019-08-19 15:19:55.714 [DEBUG] [inding.sony.internal.net.HttpRequest] - 85 * Sending client request on thread OH-thingHandler-5
85 > GET http://192.168.2.102:50002/getStatus
85 > Connection: close
85 > User-Agent: OpenHab/Sony/Binding
85 > X-Auth-PSK: 00-11-22-33-44-55
85 > X-CERS-DEVICE-ID: MediaRemote:00-11-22-33-44-55
85 > X-CERS-DEVICE-INFO: OpenHab/Sony/Binding
2019-08-19 15:19:55.718 [DEBUG] [y.internal.transports.SonyAuthFilter] - Trying to renew our authorization cookie
2019-08-19 15:19:55.845 [DEBUG] [y.internal.transports.SonyAuthFilter] - Could not renew authorization cookie: java.net.ConnectException: Connection refused (Connection refused)
2019-08-19 15:19:55.883 [DEBUG] [inding.sony.internal.net.HttpRequest] - 85 * Client response received on thread OH-thingHandler-5
85 < 200
85 < Access-Control-Allow-Origin: *
85 < Cache-Control: no-cache
85 < Connection: close
85 < content: text/xml
85 < Date: Mon, 19 Aug 2019 13:19:54 GMT
85 < Pragma: no-cache
85 < Server: Linux/2.6 Sony-BDP/2.0
85 < Transfer-Encoding: chunked
<?xml version="1.0" encoding="UTF-8"?>
<statusList>
<status name="viewing">
<statusItem field="class" value="video"/>
<statusItem field="source" value="BD"/>
</status>
<status name="disc">
<statusItem field="type" value="BD"/>
</status>
<status name="party">
<statusItem field="status" value="nr"/>
</status>
</statusList>
2019-08-19 15:19:55.894 [DEBUG] [inding.sony.internal.net.HttpRequest] - 86 * Sending client request on thread OH-thingHandler-5
86 > GET http://192.168.2.102:50002/getContentInformation
86 > Connection: close
86 > User-Agent: OpenHab/Sony/Binding
86 > X-Auth-PSK: 00-11-22-33-44-55
86 > X-CERS-DEVICE-ID: MediaRemote:00-11-22-33-44-55
86 > X-CERS-DEVICE-INFO: OpenHab/Sony/Binding
2019-08-19 15:19:55.895 [DEBUG] [y.internal.transports.SonyAuthFilter] - Trying to renew our authorization cookie
2019-08-19 15:19:55.971 [DEBUG] [y.internal.transports.SonyAuthFilter] - Could not renew authorization cookie: java.net.ConnectException: Connection refused (Connection refused)
2019-08-19 15:19:55.984 [DEBUG] [inding.sony.internal.net.HttpRequest] - 86 * Client response received on thread OH-thingHandler-5
86 < 500
86 < Connection: close
86 < Date: Mon, 19 Aug 2019 13:19:55 GMT
86 < Server: Linux/2.6 Sony-BDP/2.0
86 < X-CERS-STATUS-CODE: DI02 NoMetadata
2019-08-19 15:19:55.986 [WARN ] [ding.sony.internal.ircc.IrccProtocol] - Unknown code from getContentInformation: 500 (http reason: Internal Server Error)