[Android Q&A, Help & Troubleshooting] Sudosftw:
These tablets were sold with certain Vizio TVs in mid-2016 into 2017, primarily used for Smartcast to the TV.

They are now obsolete since Vizio released firmware for their TVs turning them into normal Smart TVs, requiring the owners of these TVs to get new remotes and the tablets stopped being useful for this function.

Here in 2019, one can buy these tablets, at the low price end, in working condition, for $25 (for the M series) to $40 (for the P series) shipped.

The specs are as follows:

XR6M10:

Snapdragon 410 1.2GHz quadcore APQ8016

2GB RAM

8GB Storage

1280x720 IPS display

802.11n, Bluetooth 4.0

2740mAh battery

MicroUSB for charging, Qi Charging built-in for bundled charge pad or any compatible charging solution

XR6P10:

Snapdragon 615 1.45GHz octocore APQ8039

2GB RAM

16GB Storage

1920x1080 IPS display

802.11n, Bluetooth 4.0

2740mAh battery

MicroUSB for charging, Qi Charging built-in for bundled charge pad or any compatible charging solution

Both tablets feature side-firing stereo speakers, a headphone jack, and NO cameras. The size of the tablet is comparable to the size of a Galaxy Note 9, give or take.

Both tablets came with Android 5.1.1, and OTA updates upgraded them to 6.0.1. There are ZERO available stock ROM files available for the tablets. I've tried sniffing the updater and they seem to go to a dead website.

The stock ROM is fairly clean, and only has the Vizio Smartcast app which needs disabling upon setting up. Aside from this, there is no other bloatware on the tablet to speak of after running a fine-tooth comb through the system apps. You get a clean and snappy tablet.

The problem:

There's no stock ROM file available, neither for Android 5.1.1 or for 6.0.1. Vizio does not have any sort of download for either on their site, nor did in the past. The updater checked a third-party website affiliated with Vizio to manage the tablet's updates, as it does with their TVs. Since the website is inert, it can be safely said that Vizio is no longer interested in their existence at all, especially since the warranty on every single one of these tablets is now up.

The tablet seems it can have the bootloader unlocked, the developer options has the toggle for that, but there's no way to get into fastboot. Holding VOL UP+DOWN+POWER at boot or sending the "adb reboot bootloader" command sends it into a "Qualcomm HS-USB QDLoader 9008" mode under USB. This, from what I understand, is behavior persistent with the locked bootloader, but I have no idea of how to get it out of this and just into fastboot. Stock recovery does not have a fastboot option either.

The desires list:

Have someone that knows the intricacies of the MSM8916 platform and the APQ8016/APQ8039 get their hands on these tablets

Get a ROM dump of both tablets in stock form so people with bricked tablets can flash them with it

Get Root (Patch level on the 6.0.1 stock ROM is from October 2016, shouldn't be hard)

Get the bootloader unlocked, somehow, and if not, figure a way to get something like Safestrap running on it if the out-of-the-box kernel allows for it

Custom ROMs? LineageOS would be sweet, especially with some of the tablet-specific fixes that have dropped in the past couple months overall.

so I ask: is there any interest in the freeing of these super cheap tablets? The price to spec ratio is not bad (once again, I got my 6M10 for $25 shipped, and the seller has like 7 more as of the time of this writing), and it doesn't seem like it would be all too hard to unlock the bootloader and get it rooted (at least, from my perspective, that of a novice in this specific hardware field). There are plenty of these in the wild in the hands of people that bought the TVs and plenty in the hands that bought them from ebay when the tablets became obsolete.

This link contains screenshots of CPU-Z and the About Tablet settings section from the tablet, uploaded to imgur. If anyone needs more information on this tablet that needs an app or adb command, I can make this happen.

Board Pic of the XR6M10, XR6P10 should be the same inside:

(click for larger image)

[IMG="Bennu_M_VP20 inside"]https://i.imgur.com/hGnn30Zl.jpg[/IMG]