$300? That's awesome. I wish
You really need to tell us what you want from the unit apart of the large screen. Take the Android rubbish back and tell the guy that it doesn't do what it claims and have your money refunded.
They did offer to take it back, and if they changed their mind I can enforce it through Consumer Affairs. I'm not worried about that part. That's the easy bit. Finding a new unit that works and does what I want is more elusive than finding a Dodo bird.
OK then, here is the exhaustive list.
1. Play music from my USB thumb drive from the port in the cars dash without running cables out the back of my dash. The music player should support a shuffle/random mode that randomly selects songs from mp3's in sub folders of the drive. AKA, exactly what the GD-01 does. I should be able to use the steering wheel controls UP to pick a new song and DOWN to restart the current song - The same as the GD-01. I should be able to adjust balance left/right, front/rear, with an equalizer that I can select a preset from or manually configure. Output power standard 40w per channel. The shuffle/random mode should work. Not select the same song 5 times in a row. If there are 366 songs on the drive, all of them should be capable of being played by the shuffle mode.
2. When I turn the unit off it displays the time only. It stays off until I choose to turn it on, not turn itself on every time I start the car.
3. NAV that works and doesn't crash 2 of 3 times. Current Victorian maps with the ability to disable all alerts if I so choose. It should not pop up alternative routes every 500m (I should be able to disable alternative route suggestions). I want it to tell me where to go (be nice!), without needing me to constantly take my attention off the road to shut it up. I would like to play music even when NAV is operating if I so choose, and the directions talks over the top. That's supposed to be fairly standard on NAV systems these days. I should be able to configure it to always avoid tolls.
4. A Bluetooth phone function which can store my address book from my phone. Hands free Bluetooth phone calls.
5. A reverse camera function. I have the camera - I've just never bothered to install it.
6. A <10 second start up. Not to the 40+ seconds this android unit takes to start up.
7. A clock that displays the correct time NOW, not 19:45 for the first 5 minutes, then the correct time.
8. Audio that works all the time that doesn't require me to turn the car off for 1+ hours to reset the unit.
9. A 7" screen that is responsive to touch. The current one almost needs to be hammered to get it to respond.
10. A DVD/CD player is optional, but colors should be true to the video file being played. The resolution should be as high as possible.
11. A powerful CPU with sufficient RAM such that the unit is responsive, doesn't lag or stall. No audio stuttering or choppiness in audio or video playback or menu navigation.
12. Should support existing steering wheel controls.
13. Fit my existing console with zero modifications or holes including the correct wiring harness for the 2013 I30.
What I don't need
1. Apple Airplay (or any equivalents of)
2. AM/FM radio (Probably impossible to get one without)
3. Bluetooth Audio
4. Tyre pressure monitor
5. WiFi. I do my computing at home.
6. A Web browser or any other bloatware.
7. A Flip out screen.
Sorry... You asked
I'm going to do the rounds again to a bunch of stores tomorrow... see if I can find any sales