[Q] "CanPlay" Android 4.2 car stereo HELP! topic

So first off let me start by saying im a total newbie.
i bought a generic android unit off ebay because i won the auction way cheaper than the asking price.
i cant post a link to it because i am new, so here is a copy of the spec sheet:

General:
- ISO 2 DIN Size
- Android 4.2 Operation System
- CPU Processor: Cortex A9 Dual Core MST786
- RAM Space: DDR3 1GB
- Internal Memory: 4G
- 8 Kinds of Dynamic Background Pictures & 16 Kinds of Static Background Pictures Selectable. Customers can also set their favorite pictures as background.
- Default LED Button Color: Blue
- Steering Wheel Control Function
- Menu Languages:
- English/Spanish/French/German/Portuguese/Italian/ Russian/Turkish/Norwegian/Japanese
- Built-In Amplifier FR/FL/RR/RL 4-Channel Subwoofer Audio Output
- 4X45W Surround Stereo
- Effect Compensation: FLAT TECHNO ROCK POP JAZZ CLASSIC OPTIMAL USER
- Built-In LCD Clock Display Function
- Auto-Memory Function
- Power Supply: DC 12V
- Max Working Current: 15A
- Gross Weight: 2.40kg
- Net Weight: 1.85kg
- Install Size:178(length)×150(width)×100(height)mm
- Panel Size: 178 x 100mm

Screen:
- Screen Size: 6.2 Inch High Definition Digital Capacitive Screen
- Resolution: 800*480(WVGA)
- Full Touch Screen Function
- Image Brightness Adjustable

Bluetooth:
- Connect Code: 1234 Name: canplay-0117
- Built-In Microphone in the control panel
- Support Bluetooth MP3 player function (Attention: This function can only be realized when the mobile phone supports Bluetooth Audio Output).
- Support Bluetooth Phone Book Function. You can quickly search for contacts manually, and it supports displaying caller name.
- Support Bluetooth version 2.0 or above phone connection, such as Apple, Samsung, HTC, Sony, etc.

USB/Micro SD:
- Built-In USB Port/Micro SD Slot
- USB Port：Can support soft drive such as USB flash drive, or MP3 player with maximum 32G compatibility. Can’t support portable hard drive.
- Micro SD Card Slot: Can support SDHC Card of maximum 32G compatibility
- Compatible Formats:
- Video Formats: MPG、MPEG、DAT、VOB、TS、TRP、TP、M2TS、MTS、MP4、MOV、RMV B、
- RM 、MKV、DIVX、 AVI、ASF、WMV、FLV、TS、WEBM. 1080P
- Audio Formats: MP3，M4A，WAV，AMR，AWB，AAC，FLAC，MID，MIDI，XMF，
- RTTTL，RTX，OTA，WMA，RA，MKA，M3U，PLS
- Picture Formats: JPEG、JPG、GIF、PNG、BMP、WBMP

DVD:
- Compatible Formats:
- MP3, WMA, MPEG1/2/4, JPEG, DivX, XviD，CD-DA，CD-TEXT，DVD-Video, DVD±R/RW, DVD-ROM, CD-DA, CD-ROM, CD-R, CD-RW

Radio:
- Built-In Radio Tuner (30 Preset Stations)
- FM(3*6)87.5-108MHz(Europe), Increment 0.05MHz
- AM(2*6)522-1620KHz, Increment: 9 KHz
- Built-In RDS Radio Receiver Function

Input & Output:
- 1*Radio Antenna Input
- 1*GPS Antenna Input
- 1*USB Input
- RCA Video Output*2/ CAM IN Video Input*1 /VIDEO IN Video Input*1
- RCA Audio FR/FL/RR/RL/Subwoofer Output AUX Audio R/L Input


Accessories

- 1x English User Manual
- 1x Power Cable
- 1x GPS Antenna
- 1x USB/3G Adapter Cable
- 1x Audio Output Adapter Cable
- 1x Video Input Adapter Cable
- 1x Subwoofer Output Adapter Cable


so... the only clue i have as to the branding (or rebranding) name is on the boot screen. it has a logo that says "CanPlay"
i have done lots of searching and i cant find anything with a name like that.

the problem i was having turned into a larger problem when i tried fixing it.
i couldnt download any apps or anything at all because i got a message saying "unfortunately the process android.process.media has stopped" every time. so after doing a bunch of research, i read a factory reset might cure it. so i went ahead and did a factory reset using the function already on the unit. not only did it not fix the problem, but now none of my physical buttons along the sides work. this includes volume/power knob, and all other external buttons. the touch screen functions fine.
ive read that this tends to happen on other models after a MCU update or change, but i have done nothing but a factory reset.
the MCU version is Lemon_cp_1.18
i have found some solutions for this problem by upgrading the mcu for different systems that seem very similar, but nothing for the CanPlay which has the "cp" mcu.

i have tried contacting the seller, no response so far. hopefully i will hear something soon.
anybody have any ideas?
Any help from you android car stereo gurus would be much appreciated.