I have one of those cheap Chinese AllDayMall A88s tablets.  7 inch.  When it comes on all is fine unless you try to open the browser.  Then things start popping up that are quite unsavory.  So I did a factory reset but it seems all that junk is built in.

Going into settings, apps, I was able to identify and stop a lot of it.  But as soon as I opened the browser it went nuts showing more.  

I got the unit to tell me to sideload a file via the menu that comes up when you hold down-volume and power.  Cool.  Following somebody's advice I installed the Android SDK to do it.  But then found out that all I needed was the [ADB Platform Tools][1] with adb.exe.  (Don't need the SDK at all it turns out)  

So I plugged it into my Win7 machine which installed an Alcatel driver for it.  I could see it in device manager.

Typing

    adb device -l

gave me a long number then the word sideload (instead of the name of the device)

Pushing on, I found out for positive certain that it needs [Alldaymall-A88X-android 4.4.2-bsf.rar][2] and thought I was on a roll.  
All I had to do was download the file, unRAR it to get the ROM image, then refresh the ROM with the command it was asking for:

    adb sideload Alldaymall-A888x-etc-etc

-- But no, the download link is to a dropbox account that says not found.  

It can easily be set to receive a sideload.  Driver installed and working. Daemon program installed and working on the PC to handle the work.   Necessary file identified.  Seemed like a slam dunk.  But no.  Not available.  Dead End.  `<sigh>`  Lots of smoke but no fire. 

----------------------------------------- 

Switching gears, I used the Windows version of [one-click KingoRoo][3]t which said it succeeded.  Went to the play store to get [Kingo SuperUser][4] and a good file explorer so I can seek and destroy.  

During the process of setting up for Play Store it wants to log in, so I let it connect to WiFi.  Big mistake.  I never even got to the part of credentials with Google.  Pop-ups on every screen and unresponsive touch panel.  OK, reboot.  

I installed a mouse via an adapter into the USB port but it worked the same as the screen.  Just fine.  Until it didn't. 

Rebooted; Shut off WiFi then with the stock file explorer I went into the DCIM directory and under Camera there were a bunch of porn photos and a video, which I successfully deleted.

I am not sure how to find the built-in junkware so I can remove it.

Now I am worn out for the night and am hoping someone can give me some advice on how to clean it up well enough that it can be useful.  

**I made some headway but this has taken hours.  So now I turn to Android Stack Exchange to get some expert opinions.  You can see that I have done my homework before asking for help.**  

`Last thing to do tonight is to uninstall the SDK.`

**The question is in the title:  Now what?**


  [1]: https://developer.android.com/studio/releases/platform-tools.html
  [2]: http://www.alldaymall.com/support-drivers-downloads.html
  [3]: https://www.kingoapp.com/
  [4]: https://superuser.kingoapp.com/