[Fire Q&A, Help & Troubleshooting] DragonFire1024:
So I just realized, after my second brick on my XT907, it was the first time after a full firmware reflash, that I went immediately to root. I did it before I turned on Wifi and before I added an account to my device. So I never got any updates to my device, OTA wise, since the actual build date of the phone. So I decided to take a good look at all my settings today, something I normally do when I get a new device or restore it. I found some interesting info.

Example: My build.prop is totally different than the one I was editing before. The WfdConfig XML files, are completely different. Well half different. Both of the two were the same as before the reflash, well half. Now I see a bunch of text following the properties to enable Wireless Display in the wfdconfig.xml

<DynamicBitrateAdaptation>0</DynamicBitrateAdaptation>
<SendKeepAlive>1</SendKeepAlive>
<RTSPPort>5550</RTSPPort>
<EncyptNonSecureContent>1</EncyptNonSecureContent>
<PerformanceLevelTurboMode>1</PerformanceLevelTurboMode>

<BitrateTable>
<AAC>
<BIT0>
<MaxBitrate>256000</MaxBitrate>
<MinBitrate>256000</MinBitrate>
</BIT0>
<BIT1>
<MaxBitrate>384000</MaxBitrate>
<MinBitrate>384000</MinBitrate>
</BIT1>
<BIT2>
<MaxBitrate>512000</MaxBitrate>
<MinBitrate>512000</MinBitrate>
</BIT2>
</AAC>
<CEA>
<BIT0>
<MinBitrate>1000000</MinBitrate>
<MaxBitrate>4000000</MaxBitrate>
</BIT0>
<BIT1>
<MinBitrate>1000000</MinBitrate>
<MaxBitrate>4000000</MaxBitrate>
</BIT1>
<BIT2>
<MinBitrate>1000000</MinBitrate>
<MaxBitrate>4000000</MaxBitrate>
</BIT2>
<BIT3>
<MinBitrate>1000000</MinBitrate>
<MaxBitrate>4000000</MaxBitrate>
</BIT3>
<BIT4>
<MinBitrate>1000000</MinBitrate>
<MaxBitrate>4000000</MaxBitrate>
</BIT4>
<BIT5>
<MinBitrate>2500000</MinBitrate>
<MaxBitrate>10000000</MaxBitrate>
</BIT5>
<BIT6>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT6>
<BIT7>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT7>
<BIT8>
<MinBitrate>10000000</MinBitrate>
<MaxBitrate>40000000</MaxBitrate>
</BIT8>
<BIT9>
<MinBitrate>10000000</MinBitrate>
<MaxBitrate>40000000</MaxBitrate>
</BIT9>
<BIT10>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>10000000</MaxBitrate>
</BIT10>
<BIT11>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT11>
<BIT12>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT12>
<BIT13>
<MinBitrate>10000000</MinBitrate>
<MaxBitrate>40000000</MaxBitrate>
</BIT13>
<BIT14>
<MinBitrate>10000000</MinBitrate>
<MaxBitrate>40000000</MaxBitrate>
</BIT14>
<BIT15>
<MinBitrate>2500000</MinBitrate>
<MaxBitrate>10000000</MaxBitrate>
</BIT15>
<BIT16>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT16>
</CEA>
<VESA>
<BIT0>
<MinBitrate>500000</MinBitrate>
<MaxBitrate>2000000</MaxBitrate>
</BIT0>
<BIT1>
<MinBitrate>1000000</MinBitrate>
<MaxBitrate>4000000</MaxBitrate>
</BIT1>
<BIT2>
<MinBitrate>2500000</MinBitrate>
<MaxBitrate>10000000</MaxBitrate>
</BIT2>
<BIT3>
<MinBitrate>2500000</MinBitrate>
<MaxBitrate>10000000</MaxBitrate>
</BIT3>
<BIT4>
<MinBitrate>2500000</MinBitrate>
<MaxBitrate>10000000</MaxBitrate>
</BIT4>
<BIT5>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT5>
<BIT6>
<MinBitrate>2500000</MinBitrate>
<MaxBitrate>10000000</MaxBitrate>
</BIT6>
<BIT7>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT7>
<BIT8>
<MinBitrate>3500000</MinBitrate>
<MaxBitrate>14000000</MaxBitrate>
</BIT8>
<BIT9>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT9>
<BIT10>
<MinBitrate>3500000</MinBitrate>
<MaxBitrate>14000000</MaxBitrate>
</BIT10>
<BIT11>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT11>
<BIT12>
<MinBitrate>2500000</MinBitrate>
<MaxBitrate>10000000</MaxBitrate>
</BIT12>
<BIT13>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT13>
<BIT14>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT14>
<BIT15>
<MinBitrate>10000000</MinBitrate>
<MaxBitrate>40000000</MaxBitrate>
</BIT15>
<BIT16>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT16>
<BIT17>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT17>
<BIT18>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT18>
<BIT19>
<MinBitrate>10000000</MinBitrate>
<MaxBitrate>40000000</MaxBitrate>
</BIT19>
<BIT20>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT20>
<BIT21>
<MinBitrate>10000000</MinBitrate>
<MaxBitrate>40000000</MaxBitrate>
</BIT21>
<BIT22>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT22>
<BIT23>
<MinBitrate>10000000</MinBitrate>
<MaxBitrate>40000000</MaxBitrate>
</BIT23>
<BIT24>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT24>
<BIT25>
<MinBitrate>10000000</MinBitrate>
<MaxBitrate>40000000</MaxBitrate>
</BIT25>
<BIT26>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT26>
<BIT27>
<MinBitrate>10000000</MinBitrate>
<MaxBitrate>40000000</MaxBitrate>
</BIT27>
<BIT28>
<MinBitrate>5000000</MinBitrate>
<MaxBitrate>20000000</MaxBitrate>
</BIT28>
<BIT29>
<MinBitrate>10000000</MinBitrate>
<MaxBitrate>40000000</MaxBitrate>
</BIT29>
</VESA>
<HH>
<BIT0>
<MinBitrate>500000</MinBitrate>
<MaxBitrate>2000000</MaxBitrate>
</BIT0>
<BIT1>
<MinBitrate>1000000</MinBitrate>
<MaxBitrate>4000000</MaxBitrate>
</BIT1>
<BIT2>
<MinBitrate>500000</MinBitrate>
<MaxBitrate>2000000</MaxBitrate>
</BIT2>
<BIT3>
<MinBitrate>1000000</MinBitrate>
<MaxBitrate>4000000</MaxBitrate>
</BIT3>
<BIT4>
<MinBitrate>500000</MinBitrate>
<MaxBitrate>2000000</MaxBitrate>
</BIT4>
<BIT5>
<MinBitrate>1000000</MinBitrate>
<MaxBitrate>4000000</MaxBitrate>
</BIT5>
<BIT6>
<MinBitrate>500000</MinBitrate>
<MaxBitrate>2000000</MaxBitrate>
</BIT6>
<BIT7>
<MinBitrate>1000000</MinBitrate>
<MaxBitrate>4000000</MaxBitrate>
</BIT7>
<BIT8>
<MinBitrate>500000</MinBitrate>
<MaxBitrate>2000000</MaxBitrate>
</BIT8>
<BIT9>
<MinBitrate>1000000</MinBitrate>
<MaxBitrate>4000000</MaxBitrate>
</BIT9>
<BIT10>
<MinBitrate>500000</MinBitrate>
<MaxBitrate>2000000</MaxBitrate>
</BIT10>
<BIT11>
<MinBitrate>1000000</MinBitrate>
<MaxBitrate>4000000</MaxBitrate>
</BIT11>
</HH>
</BitrateTable>
<CyclicIntraRefresh>
0
</CyclicIntraRefresh>
<CIRNumberOfMacroBlocks>
50
</CIRNumberOfMacroBlocks>
<!-- To disable/enable audio stream playback
support during power suspend - 0 or 1
-->
<AudioStreamInSuspend>1</AudioStreamInSuspend>
<AudioAVSyncDelay>0</AudioAVSyncDelay>
<DisableFillerNalU>1</DisableFillerNalU>
</WFDConfig>

Not to mention this button had shown up in developer options and I have yet to find these alleged options:

I also found all the software. Yes...every piece of it, including the sink! However it doesn't appear to be compiled into anything and I'm not even sure what file types these are:

Any assistance with this would be much appreciated :)