Hi, the simulator since a week start but I get always only a black screen:
I've already cleanup [AppData]\Roaming\Fitbit OS Simulator\logs and also re installed the simulator.
Apart from the display everything seems to work: I can see in the console that my watch face is starting and working as expected.
This is a log of a simulator start:
[2021-05-04 09:27:46.265] [info] shell->app: {"id":0,"method":"initialize","params":{"capabilities":{"protocol":{"maxMessageSize":536870912}}},"jsonrpc":"2.0"}
[2021-05-04 09:27:46.725] [info] appsim stdout: [I][2021-05-04T07:27:46.420Z][] Starting breakpad client - reporting to \\.\pipe\Fitbit OS Simulator Crash Service[0m
[1;31m[E][2021-05-04T07:27:46.426Z][] Could not connect to breakpad server![0m
[1;31m[E][2021-05-04T07:27:46.447Z][] Fb_UserAlarms_Read: KV entry for alarm info not found![0m
[1;31m[E][2021-05-04T07:27:46.447Z][] Fb_UserAlarms_Read: Any Alarms have been purged.[0m
[D][2021-05-04T07:27:46.450Z][] Scheduler starting dispatch time: 1620113266450[0m
[I][2021-05-04T07:27:46.724Z][] Restarting alarms[0m
[I][2021-05-04T07:27:46.724Z][] No upcoming alarms. Disabling alarm[0m
[A][2021-05-04T07:27:46.725Z][] Houston, this is Sense!![0m
[A][2021-05-04T07:27:46.725Z][] Press ? anytime for help[0m
[A][2021-05-04T07:27:46.725Z][] Version: 255.2.314 (Aug 31 2020 22:54:39): 0b0769a9973[0m
[A][2021-05-04T07:27:46.725Z][] GNU_BUILD_ID: [0m
mfgtst $
[2021-05-04 09:27:47.728] [info] app->shell: {"jsonrpc":"2.0","result":{"displayDimensions":{"w":336,"h":336},"capabilities":{"protocol":{"maxMessageSize":524288},"display":{"imageFormat":"ARGB8888","variableBrightness":true,"onOff":true},"gps":true,"barometer":true,"accelerometer":true,"gyroscope":true,"orientation":true,"hrm":true,"bodypresence":true}},"id":0}
[2021-05-04 09:27:47.730] [info] app->shell: {"jsonrpc":"2.0","method":"devbridge.status","params":{"status":"disconnected"}}
[2021-05-04 09:27:47.731] [info] app->shell: {"jsonrpc":"2.0","method":"display.status","params":{"on":true,"aodActive":false,"stayOn":false,"brightness":0.4}}
[2021-05-04 09:27:47.734] [info] shell->app: {"id":1,"method":"devbridge.connect","params":{"authorization":"<redacted>","uri":"wss://027-v3-api-soa.fitbit.com:443/dbridge/"},"jsonrpc":"2.0"}
[2021-05-04 09:27:47.736] [info] Connecting to developer relay
[2021-05-04 09:27:47.741] [info] shell->app: {"id":2,"method":"apps.status","jsonrpc":"2.0"}
[2021-05-04 09:27:47.743] [info] shell->app: {"id":3,"method":"power.update","params":{"chargeLevel":1,"chargerState":"disconnected"},"jsonrpc":"2.0"}
[2021-05-04 09:27:47.746] [info] shell->app: {"id":4,"method":"usersettings.update","params":{"units":{"distance":"metric","speed":"metric","volume":"metric","temperature":"C","height":"metric","bodyWeight":"metric","weight":"metric"},"locale":{"language":"en-US"},"device":{"airplaneModeEnabled":false,"vibrationEnabled":true},"exercise":{"poolLength":25},"preferences":{"clockDisplay":"24h","firstDayOfWeek":1}},"jsonrpc":"2.0"}
[2021-05-04 09:27:47.747] [info] shell->app: {"id":5,"method":"primarygoal.update","params":{"primaryGoal":"steps"},"jsonrpc":"2.0"}
[2021-05-04 09:27:47.749] [info] appsim stdout: [I][2021-05-04T07:27:46.725Z][] Simulator control server starting on 127.0.0.1:63981[0m
[1;31m[E][2021-05-04T07:27:46.770Z][] Sending while the simulator control channel is disconnected[0m
[D][2021-05-04T07:27:46.770Z][] settings_scheduler_Initialize[0m
[D][2021-05-04T07:27:46.770Z][] settings_scheduler_HandleTimeChange[0m
[D][2021-05-04T07:27:46.770Z][] Schedule: setting 45 enabled 1 start 82800 end 25200[0m
[D][2021-05-04T07:27:46.770Z][] Schedule: setting 36 enabled 0 start 25200 end 82800[0m
[D][2021-05-04T07:27:46.770Z][] Next expiration after 48734 seconds[0m
[D][2021-05-04T07:27:46.770Z][] Schedule 45 already in correct state[0m
[D][2021-05-04T07:27:46.772Z][] Popupmgr: precached popup "Notif-Center" context cleared.[0m
[D][2021-05-04T07:27:46.772Z][] Failed to deserialize file, error: 3[0m
[D][2021-05-04T07:27:46.772Z][] STARTED the TODAY MODEL[0m
[D][2021-05-04T07:27:46.772Z][] Deserializing the following file: /system/approot/112/private/data/sleep.cbor[0m
[D][2021-05-04T07:27:46.773Z][] Failed to deserialize sleep.cbor
[0m
[D][2021-05-04T07:27:46.773Z][] Deserializing the following file: /system/approot/112/private/data/minerva.cbor[0m
[D][2021-05-04T07:27:46.773Z][] Failed to deserialize minerva.cbor
[0m
[D][2021-05-04T07:27:46.773Z][] Deserializing the following file: /system/approot/112/private/data/water.cbor[0m
[D][2021-05-04T07:27:46.773Z][] Failed to deserialize water.cbor
[0m
[D][2021-05-04T07:27:46.773Z][] Deserializing the following file: /system/approot/112/private/data/weight.cbor[0m
[D][2021-05-04T07:27:46.773Z][] Failed to deserialize weight.cbor
[0m
[D][2021-05-04T07:27:46.773Z][] Deserializing the following file: /system/approot/112/private/data/user.cbor[0m
[D][2021-05-04T07:27:46.773Z][] Failed to deserialize user.cbor
[0m
[D][2021-05-04T07:27:46.773Z][] Deserializing the following file: /system/approot/112/private/data/exercise.cbor[0m
[D][2021-05-04T07:27:46.773Z][] Failed to deserialize exercise.cbor
[0m
[D][2021-05-04T07:27:46.773Z][] Failed to deserialize /system/approot/112/private/data/food-Tuesday.cbor
[0m
[D][2021-05-04T07:27:46.773Z][] STARTED the MINDFULNESS MODEL[0m
[1;31m[E][2021-05-04T07:27:46.773Z][] Relax app not installed: 1280[0m
[D][2021-05-04T07:27:46.773Z][] Eda app not installed: 1280[0m
[I][2021-05-04T07:27:47.072Z][] ClockEvent: --> Set battery indicator state: '4'[0m
[D][2021-05-04T07:27:47.082Z][] Popupmgr: precached popup "Notif-Center" context cleared.[0m
[I][2021-05-04T07:27:47.083Z][] Switcher_UnlockDevice: Unlocking the device[0m
[D][2021-05-04T07:27:47.083Z][] Launcher: Process creation of app_id 111 took 0ms. Status:0.[0m
[D][2021-05-04T07:27:47.083Z][] Sending app launch notification for app_id 111[0m
[D][2021-05-04T07:27:47.083Z][] Switcher_Clock: Launch of clock_id 111 succeeded. attempt 1[0m
[D][2021-05-04T07:27:47.083Z][] App informed of window resume[0m
[D][2021-05-04T07:27:47.083Z][] Switcher_Clock: Clock_id 111 launched[0m
[1;31m[E][2021-05-04T07:27:47.099Z][] Error opening annotation log[0m
[I][2021-05-04T07:27:47.101Z][] JS Application Compatibility Version: 1.0.0[0m
[D][2021-05-04T07:27:47.179Z][] App informed of window resume[0m
Snapshot found: /mnt/cache/index.js.snapshot
./index.js:3:1> Default JS app started
Snapshot loaded and executed (total time: 2 ms)
[D][2021-05-04T07:27:47.181Z][] Switcher_Clock: Clock_id 111 foregrounded[0m
[D][2021-05-04T07:27:47.181Z][] Switcher_UpdateClockInstallView: Clock now running![0m
[1;31m[E][2021-05-04T07:27:47.181Z][] Sending while the simulator control channel is disconnected[0m
[D][2021-05-04T07:27:47.725Z][] Simulator control websocket client connected[0m
[I][2021-05-04T07:27:47.727Z][] Launcher: Relaunch foreground app (app_id 111) with animation 0'
[0m
[A][2021-05-04T07:27:47.736Z][] Connecting to "wss://027-v3-api-soa.fitbit.com:443/dbridge/"[0m
[1;31m[E][2021-05-04T07:27:47.738Z][] Failed to read extra field without a Rockyport context.[0m
[1;31m[E][2021-05-04T07:27:47.738Z][] Failed to read extra field wit
[2021-05-04 09:27:47.752] [info] app->shell: {"jsonrpc":"2.0","result":null,"id":1}
[2021-05-04 09:27:47.754] [info] app->shell: {"jsonrpc":"2.0","method":"devbridge.status","params":{"status":"connecting"}}
[2021-05-04 09:27:47.756] [info] app->shell: {"jsonrpc":"2.0","method":"devbridge.status","params":{"status":"connecting"}}
[2021-05-04 09:27:47.758] [info] app->shell: {"jsonrpc":"2.0","method":"app.status","params":{"app":{"uuid":"000013ff-0000-4000-8000-000000f17b17","buildID":"0000000000000000","name":"RunJS","isBuiltin":true},"status":"stopped"}}
[2021-05-04 09:27:47.759] [info] app->shell: {"jsonrpc":"2.0","method":"display.status","params":{"on":true,"aodActive":false,"stayOn":false,"brightness":0.4}}
[2021-05-04 09:27:47.761] [info] app->shell: {"jsonrpc":"2.0","result":{"apps":[]},"id":2}
[2021-05-04 09:27:47.762] [info] app->shell: {"jsonrpc":"2.0","result":null,"id":3}
[2021-05-04 09:27:47.764] [info] app->shell: {"jsonrpc":"2.0","result":null,"id":4}
[2021-05-04 09:27:47.765] [info] app->shell: {"jsonrpc":"2.0","result":null,"id":5}
[2021-05-04 09:27:47.767] [info] app->shell: {"jsonrpc":"2.0","method":"display.status","params":{"on":true,"aodActive":false,"stayOn":false,"brightness":0.4}}
[2021-05-04 09:27:47.770] [info] app->shell: {"jsonrpc":"2.0","method":"display.status","params":{"on":true,"aodActive":false,"stayOn":false,"brightness":0.4}}
[2021-05-04 09:27:47.772] [info] app->shell: {"jsonrpc":"2.0","method":"display.status","params":{"on":true,"aodActive":false,"stayOn":false,"brightness":0.4}}
[2021-05-04 09:27:47.776] [error] appsim stderr: [35;1m[2021/05/04 09:27:46:7256] NOTICE: libuv support not compiled in
[0m[35;1m[2021/05/04 09:27:46:7376] NOTICE: Creating Vhost 'default' port -1, 1 protocols, IPv6 off
[0m[35;1m[2021/05/04 09:27:46:7411] NOTICE: created client ssl context for default
[0m[35;1m[2021/05/04 09:27:46:7411] NOTICE: Creating Vhost 'default' port 63981, 1 protocols, IPv6 off
[0m[35;1m[2021/05/04 09:27:47:7361] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7471] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7491] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7501] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7501] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7611] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7611] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7611] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7621] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7621] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7621] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7621] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7631] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7631] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7631] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7631] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7631] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7641] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7641] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7641] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7641] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7651] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7651] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7651] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7651] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7661] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7661] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7661] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7661] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7661] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7671] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7671] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7671] NOTICE: lws_client_connect_2: 0ecefe98: address 027-v3-api-soa.fitbit.com
[0m[35;1m[2021/05/04 09:27:47:7771
[2021-05-04 09:27:47.838] [info] app->shell: {"jsonrpc":"2.0","method":"app.status","params":{"app":{"uuid":"000013ff-0000-4000-8000-000000f17b17","buildID":"0000000000000000","name":"RunJS","isBuiltin":true},"status":"started"}}
[2021-05-04 09:27:48.352] [info] app->shell: {"jsonrpc":"2.0","method":"devbridge.status","params":{"status":"connected"}}
[2021-05-04 09:27:48.356] [info] Connected to developer relay
[2021-05-04 09:27:49.620] [info] shell->app: {"id":6,"method":"input.touch","params":{"state":"up","location":{"x":238,"y":0}},"jsonrpc":"2.0"}
[2021-05-04 09:27:49.631] [info] app->shell: {"jsonrpc":"2.0","result":null,"id":6}
[2021-05-04 09:27:49.643] [info] shell->app: {"id":7,"method":"input.touch","params":{"state":"up","location":{"x":261,"y":-2}},"jsonrpc":"2.0"}
[2021-05-04 09:27:49.656] [info] app->shell: {"jsonrpc":"2.0","result":null,"id":7}
[2021-05-04 09:27:51.623] [info] shell->app: {"id":8,"method":"input.touch","params":{"state":"up","location":{"x":140,"y":1}},"jsonrpc":"2.0"}
[2021-05-04 09:27:51.634] [info] app->shell: {"jsonrpc":"2.0","result":null,"id":8}
[2021-05-04 09:27:51.656] [info] shell->app: {"id":9,"method":"input.touch","params":{"state":"up","location":{"x":-62,"y":42}},"jsonrpc":"2.0"}
[2021-05-04 09:27:51.668] [info] app->shell: {"jsonrpc":"2.0","result":null,"id":9}
Best Answer