Content not rendering when renderMode is set to CPU on QM734-8G

Question

I developed a mobile app for Android and iOS.
Recently, I've come across an android tablet, QM734-8G, that uses Android 4.2.2. When launching the app on this device, I simply get a blank screen and no content is rendered. I know the app is running because when I debug it, I can see all the code executed and traces appearing in the console.
After a lot of testing, I narrowed down the issue; it has to do with the renderMode. The app uses CPU render mode because I don't use any Stage 3D stuff or perform any graphic intensive operations. When I set the render mode to GPU the content does get renreded but I lose the filters (which is a known limitation of GPU rendering) and scrollRect doesn't work as expected. When I set the render mode to DIRECT I can also see the content and this time with filters and everything but the app starts crashing as it seems the memory usage increases in that render mode.
I've done a quick test and created and empty text projetc in Flash Builder and I simply specify the background of the SWF and with that simple test I can replicate the issue, so it's not sometihng specific to the content in my app. I've tested using AIR 3.8 and AIR 3.9.
The tablet has low specs and it's really cheap, but from what I see, the specs are enough to support app deployed usign AIR. Is there something I'm missing?
Please see a screenshot of the device info page.

Answer 1

This means that the SWF is written so that it only works when
embedded in a web page. When you add the SWF to the stage as a
stand-alone display object using addChild() it is not being hosted
in the web page.
You have 2 options:
1. Modify the SWF code (if possible) to remove the
ExternalInterface requirement. You can write code in your AIR
application javascript to subscribe directly to events from the SWF
using addListener() and call functions directly on the SWF object
(Flash/Actionscript is not my primary development environment... so
if I have gotten the terminology wrong I apologize, but I HAVE
written a flash application that worked as I describe). My SWF
actually works embedded in HTML or not using the code "if
(ExternalInterface.available) {
ExternalInterface.addCallback("setIsPlaying", setIsPlaying ); }"
2) Somehow add a HTMLLoader in a new child window (with
transparent = false) to the stage as a new child. I have not yet
figured out exactly how to do this, so If anyone can provide
information on how to do this, I too would be appreciative.