Who else makes this, what rom could I use, could I make a CM build from their link - Android Q&A, Help & Troubleshooting

UPDATE - CPUz app said it was a dual core ARM CORTEX-A9 1.5 GHz, revision r3p0
Galaxy tab 3 has the same processor
Someone said asus made them, one guy said he found a rom for a i-mobile phone that was also rebranded in germany.
Hello all,
I was in thailand and my phone died so I got a cheap $45 tablet to use whatsapp to talk to family and friends. I read asus makes the devices - I'm assuming that someone made this tablet for the company that sold it and that it's a little better than a cheap Chinese tablet quality bc it has had no issues and seems pretty good and was offered by a respected phone company over there. I wanted to upgrade to a newer Rom >4.2, now that I am back in the states.
1.) I had an adnroid stick PC and it seemed like the sticks where all the same chipset and then had roms you could load on them regardless of their brand. Are there universal roms I could look into.
2.) I'm not sure how hard it would be to make a CM rom for this device , but I did see that they have a link to create a build.
I'm going to try one-click, Kingo root, king root, etc to see if I can unlock it so I can turn off the telephony.apk and phone.apk since this one did not have a sim card and was wifi only. The manuf didn't delete those apps so they keep draining the battery looking for service.
Your help is appreciated and thanks in advance!
Device http://product.i-mobilephone.com/1573_
Brand - I-mobile = http://www.i-mobilephone.com/
Brand Wiki https://en.wikipedia.org/wiki/I-Mobile
Model I-tab DTV (I wish they had DTV-T2 here, it was great quality in Bangkok on this thing
Android 4.2.2
Chipset - 1.5 GHz dual core - I can't find the chip type/brand anywhere, but was going to start looking through Asus's website to find a similar device.
Click translate on this site to see specs or see info below: http://www.siamphone.com/spec/i-mobile/i-tab_dtv.htm
device on youtube - https://www.youtube.com/results?sear...tab+dtv+review
Computer information
tablet
Display Ultra AMOLED 24-bit (16 million colors)
- Touch Multi-Touch
- a 7-inch (diagonal directions)
- Resolution: 1024 x 600 pixels
- Capacitive.
Sensors (Sensor)
- Automatic image rotation system. (Accelerometer)
- on / off the screen automatically when a call (Proximity).
Operating System (OS, CPU).
Operating system: Android 4.2 (Jelly Bean).
Processor: Dual Core - Speed: 1.5 GHz.
Memory
- 8GB ROM
- 1GB RAM.
Memory cards microSD - up to 32 GB.
Interconnected System
Positioning: Assisted GPS
WiFi
Bluetooth 3.0
Micro USB 2.0
HDMI (for TV input signal).
3.5 mm headset jack.
Multimedia Functions
The built-in TV tuner (TV Tuner).
TV tuner in the DVB-H DVB T2.
5 megapixel digital camera (Digital Camera)
- AF (Auto Focus).
Camera (Front Camera)
- 2-megapixel resolution.
Save video animations (Video Recording).
Video (Video Player)
- File Format: MPEG-4
- Supports video from YouTube ™.
Music (Music Player)
- file formats: MP3.
Radio FM Radio
Battery
Standard Battery 4,000 mAh (Standard Battery)