[Android Q&A, Help & Troubleshooting] hs4842:
I have confirmed that these files do in fact work. However: A word of caution. I had problems getting my device to boot after installing TWRP. It should be noted that you will have to unlock your boot loader (the Voyo Boot Loader Unlock program for other devices worked for mine too. The Fastboot commands are simple enough to run by hand get the job done). This will wipe your device and reboot.

Since Voyo is a Chinese company, the USA has restrictions on what the device has to employ for security. That includes a trusted, locked bootloader. Once you unlock it your device will display a warning that your device is no longer trusted, and give you a (long) 5 second delay before booting. This will also cause a number of Google services to see your device as not being in compliance.

Translation: You won't be able to watch Netflix on your device....but seriously - Who would want to?? Just load Showbox.apk on it, and Blokada (blokada.org) to kill the ads. (with regards to Blokada - do not load the Mother Of All Ads filter. It will crash blokada)

You must:

1. Install Super User app on your SD Card **BEFORE** you install TWRP. This is the program that cleans up some of the mess the TWRP install leaves behind.

2. Install TWRP via SP Tools. Be sure to backup your recovery.img file before you start (via SP Tools - learn how to use this app before you mess with it)

3. Clear Cache and Delvic cache.

4. Reboot back into Recovery mode

5. Install Super User app. This will clean up the device so you don't get stuck while booting.

At this point you can load and configure your device. Problem is you will not be able to enjoy anything other than GSM speeds (3G) until you fix your IMEI numbers.

***YOU WILL NEED TO DO THE FOLLOWING***

6. The IMEI numbers that ship with the Voyo i8 Max are invalid. Go online to site that has an IMEI Generator and generate a IMEI based on Samsung Galaxy LTE device of your choice. Record two of the numbers down (for SIM1 and SIM2). You'll need these in a moment.

Just be careful that the IMEI number you pick is not a duplicate of someone else's phone or you might get blocked.

7. Use the App Ghost Phone to set the new IMEI numbers. After you have set the numbers, shut your phone off for at least 10 minutes. This will let the network forget your device is 3G. After ten minutes turn your device on and if you have 4G LTE in your range, you will see the 4G icon and either another 4G icon, that means you only have 4G in your area for fastest speed, or 4G and LTE noted for LTE speeds.

After I done this I loaded Androoster and Root Booster to speed my device up even further. Bringing the look and feel of my phablet up to workstation level operations. Installed Viper for Android for added sound features and increase of volume (speaker is very weak on the tablet). Added VPN software, Anti-Virus, and Adaware for near ad free use. Although a lot of ads now are fed by the host server of the app and adware does not block those completely.

I have used my machine for almost two months now and really enjoy it. While the device does not have a GPS, Waze does a good job at ignoring this fact. Google Maps is useless on this device without a good Compass. There exists a kit project for a Bluetooth compass that is reported to work with this device.

Be careful of the type of Bluetooth headphones you choose. I have a mono-speaker Cobra trucker headset. It links well but nothing plays through it except phone calls. For generic mono with mic get a gaming bluetooth cheap headset. Or spend the money for Parrot Trucker headset. For Music, direct wire or find a good over-the-ear set that does Bluetooth very well. Found a $10 set on Wish that did the job so well I bought 2 (one for the Mrs.).

I'm still bugging Voyo for the I8 Max install firmware. The one they have is the i8 Plus SD dump. Doesn't work with our gear, but we can use it as a template for mods if necessary. Particularly with TWRP.

I hope this helps. Please click thanks and keep the good stuff rolling...