[Fire TV Q&A, Help & Troubleshooting] kisspachyousee:
Hello everybody,

after unlocking the bootloader and rooting, I tried to install LineageOS. Everything was fine, but I liked the original version of the system more. So I flashed the stock image again.

Now it happens that for every video I start, the system crashes and restarts.

This is a part of the logcat.

04-05 10:12:06.191 366 10755 D vdec_app: [MtkVdecH265SecInit] + secureHandle:5702, size:36651
04-05 10:12:06.192 366 10755 I vdec_app: UREE_RegisterSharedmemWithTag: 0, line:316, gMemSession(1)
04-05 10:12:06.192 366 10755 I chatty : uid=1046(mediacodec) MtkOmxVdecDecod identical 1 line
04-05 10:12:06.192 366 10755 I vdec_app: UREE_RegisterSharedmemWithTag: 0, line:316, gMemSession(1)
04-05 10:12:06.193 7924 10646 I AmazonVideo: Sending com.amazon.avod.event.START_PLAYBACK broadcast for amzn1.dv.gti.aeb8bacc-365b-0844-4d98-79a41bf5c427
04-05 10:12:06.197 7924 10760 I AmazonVideo: MediaCodec for {sample-rate=48000, mime=audio/mp4a-latm, channel-count=2} indicates output format changed to {sample-rate=48000, pcm-encoding=2, mime=audio/raw, channel-count=2}
04-05 10:12:06.198 7924 10682 I : T10682: AIVDashFragmentJNI::Java_com_amazon_avod_smoothstream_dash_Mp4FragmentJni_parse: Parsing fragment (size 103154)
04-05 10:12:06.200 7924 10671 I platform-utils: onDownloadComplete(): BolaTransient OnDownloadComplete transientBufferSeconds 119.700, realBufferSeconds 37.496
04-05 10:12:06.201 7924 10671 I platform-utils: reportDownloadProgress(): BOLA Video completed request FragmentInfo{fragmentIndex: 13, timeAllowedMillis: 8016, sizeInBytes: 103154, bytesDownloaded: 103154} | Reason: DOWNLOAD_STATUS_SUCCESS, BufferSeconds 37.50, elapsedMillis 85, StallMillis 0.00
04-05 10:12:06.201 7924 10671 I platform-utils: getBolaBitRate(): getBolaBitRate FragmentIndex 14 SelectedBitrate 9.00 mbps Note: BufferDurationSec 119.700 ParamV/Gamma 5.260/18.759 BitRate/GoodnessValue 0.05MB/-0.000677529 0.10MB/-0.000279987 0.18MB/-0.000127860 0.25MB/-0.000080918 0.40MB/-0.000040611 0.80MB/-0.000012959 1.00MB/-0.000008458 1.30MB/-0.000004799 2.20MB/-0.000000814 4.00MB/0.000000820 9.00MB/0.000001128 optimalValue 0.000001128 idealGoodnessValue 0.000001117
04-05 10:12:06.218 7924 10682 I AmazonVideo: DownloadRequest downloading url: https://pop-it-cf.dash.pv-cdn.net/dm/2$KEynCzMEy6b-nofKzOAqu3cWR-0~/1@b9edae4a3ca7148697be2926dc406e2c/e151/56f7/0eea/43c1-9c6b-68f785cc1551/2@AgBgAAACAAAMxUALK_UCEAMggA==/52d2f173-ad2e-4fa6-8de0-35e01f9c2646_video_9.mp4 | headers: {Range=bytes=4013276-4748948} | expectedSizeKB: 718 | timeoutMillis: 9000
04-05 10:12:06.224 7924 10671 I platform-utils: submitDownloadRequests(): BOLA Video requested download | FragmentIndex 14, bitrateMbps 9.00, timeoutMillis 9000, State LOW_TRANSIENT, BufferSec:(Compensated 119.70, Effective 119.70, Real 37.50, Stall 0.02), maxBufferSec 126.00
04-05 10:12:06.225 7924 10707 I : T10707: AIVDashFragmentJNI::Java_com_amazon_avod_smoothstream_dash_Mp4FragmentJni_parse: Parsing fragment (size 33375)
04-05 10:12:06.230 7924 10678 I AmazonVideo: DownloadRequest downloading url: https://pop-it-cf.dash.pv-cdn.net/dm/2$KEynCzMEy6b-nofKzOAqu3cWR-0~/1@b9edae4a3ca7148697be2926dc406e2c/e151/56f7/0eea/43c1-9c6b-68f785cc1551/2@AgBgAAACAAAWpwAA_cYCMAMggA==/52d2f173-ad2e-4fa6-8de0-35e01f9c2646_audio_45.mp4 | headers: {Range=bytes=672902-705888} | expectedSizeKB: 32 | timeoutMillis: 6000
04-05 10:12:06.238 7924 10675 I platform-utils: submitDownloadRequests(): BOLA Audio requested download for fragmentIndex 19 timeoutMillis 6000 downloadHandle 34
04-05 10:12:06.238 7924 10675 I platform-utils: reportDownloadProgress(): BOLA Audio completed request | Reason: DOWNLOAD_STATUS_SUCCESS, fragmentIndex 18, elapsedTimeMillis 101 ms, latency 54 ms
04-05 10:12:06.238 523 542 W ActivityManager: Slow operation: 59ms so far, now at startProcess: returned from zygote!
04-05 10:12:06.248 10765 10765 E evice.messagin: Not starting debugger since process cannot load the jdwp agent.
04-05 10:12:06.449 9452 9474 E SystemStatusMonitorSys_MultimediaMetrics: Other information is not supported
04-05 10:12:06.682 339 339 I perfmonitord:StatUtil: CPUUtilization crossed 95%. Current - 98%
04-05 10:12:06.449 9452 9474 E SystemStatusMonitorSys_MultimediaMetrics: Other information is not supported
04-05 10:12:07.531 9416 9451 D SystemStatusMonitorApp_DataManager: update Audio Focus
04-05 10:12:07.531 9416 9451 D SystemStatusMonitorApp_DataManager: Get Audio Focus Cursor
04-05 10:12:07.533 9452 9464 D SystemStatusMonitorSys_SSMProvider: query called
04-05 10:12:07.947 9416 9450 D SystemStatusMonitorApp_MultimediaModel: Multimedia updated
04-05 10:12:07.947 9416 9450 D SystemStatusMonitorApp_DataManager: update Multimedia
04-05 10:12:07.947 9416 9450 D SystemStatusMonitorApp_DataManager: Get Multimedia Cursor
04-05 10:12:07.948 9452 9468 D SystemStatusMonitorSys_SSMProvider: query called
04-05 10:12:08.447 9452 9475 E SystemStatusMonitorSys_MultimediaMetrics: Other information is not supported
04-05 10:12:08.448 9452 9475 E SystemStatusMonitorSys_MultimediaMetrics: Other information is not supported
04-05 10:12:10.448 9452 9472 E SystemStatusMonitorSys_MultimediaMetrics: Other information is not supported
04-05 10:12:10.448 9452 9472 E SystemStatusMonitorSys_MultimediaMetrics: Other information is not supported
04-05 10:12:16.241 7924 7934 E com.amazon.avo: Timed out waiting for threads to suspend, waited for 10.000s
04-05 10:12:26.241 7924 7934 E com.amazon.avo: Timed out waiting for threads to suspend, waited for 20.000s
04-05 10:12:36.241 7924 7934 E com.amazon.avo: Timed out waiting for threads to suspend, waited for 30.000s
04-05 10:12:37.769 1206 1290 I zon.tv.launche: Waiting for a blocking GC ProfileSaver
04-05 10:12:46.241 7924 7934 E com.amazon.avo: Timed out waiting for threads to suspend, waited for 40.000s

Is there any way to completely remove TWRP and bootloader to go back to stock version?