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ClockworkMod (CWM) Recovery easy install for RK3066 and RK3188 -- TWRP/CWM Flash-Tool and root for RK3288

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Rockchip rk30sdk Head Unit Tablet
Manufacturer: rockchip Model: rkpx3 Brand: rockchip Board: rk30sdk Device: rkpx3 Hardware: rk30board Platform: rkpx3 Product: rkpx3
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captg
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2016/11/03 - 04:14
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Hello all!

I hope I have the proper forum...

I'm only getting sound out of their radio app... No audio with anything else. :/

Main Parameters
*OS: Android 4.4.4
*CPU: Rockchip Cortex A9 Quad Core
*Main Frenqency:1.6GHz
*RAM:SAMSUNG 2GB DDR3
*ROM:32GB

Android Version: 4.4.4
CPU Info: Cortex-A9 QuadCore, GPU3D: Mali-400 MP4, RAM: 2GB DDR3
System Info: HHQ Summer 2.0
MCU: HHQ_60:C6R_R76_V1.00_CAN(DaZhongOT)
BT Version: GOCBC8_V1.0/2016:06:15:11:34:43

I'm wondering if there are any known ROMS that have been tried on this unit or worth trying? Thanks!

SINOSMART Quad Core 1.6GHz RAM 2GB 10.2'' Android 4.4

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Oma7144

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2016/11/03 - 20:14
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We do not have experience with such devices here. You are running the stock firmware?

- Oma -

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captg
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2016/11/03 - 20:17
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Yes. AIDA64 Report: 

https://codeshare.io/S552Z

Manufacturer: rockchip
Model: rkpx3
Brand: rockchip
Board: rk30sdk
Device: rkpx3
Hardware: rk30board

I'm pretty sure it's just a tablet converted into a head unit. 

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2016/11/03 - 20:24
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No, completly different. When it is quad core then it is btw a rk31board.

- Oma -

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2016/11/03 - 20:28
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Good to know! I'm just not sure where to go... The seller I bought it from isn't able to fix the unit. I thought maybe I could find a replacement ROM for it to get the sound working properly. 

I was able to root it with Kingroot. 

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2016/11/03 - 20:34
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Such things are deep into the hardware abstraction layers. RK do not publish the source code, so useres are anyway trapped with such issues.

- Oma -

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2016/11/03 - 20:39
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Oma7144 said
Such things are deep into the hardware abstraction layers. RK do not publish the source code, so useres are anyway trapped with such issues.

- Oma -  

What's strange is... the AM/FM radio app & Google maps have sound. Every other app I've tried does not. :/

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2016/11/03 - 20:44
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2016/11/03 - 20:46
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This indicatives of poor quality or product deficiency. Just return the device.

- Oma -

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2016/11/03 - 21:08
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Unfortunately, the seller is MIA now... I am going to have to dispute it because they're not supporting the device. I was hoping I could reflash it like I said... I was able to root it and back it up. 

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2016/11/03 - 21:15
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Does the issue also exist using the headphone port (if there is one) or while connecting via Bluetooth?

- Oma -

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2016/11/03 - 21:31
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No headphone port that I know of. There is an AUX app, which appears to be for video however... I haven't had any luck getting it to work. 

Bluetooth, it connects to my phone just fine, displays the number I'm dialing, but I am not able to hear anything. 

Bluetooth Audio, again connects just fine and I am able to play/pause/skip tracks etc... but no audio. 

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2016/11/03 - 21:34
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Ok, same issue. Pls let me have a dmesg and a logcat log from that situation.

- Oma -

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2016/11/03 - 23:17
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Oma7144 said
Ok, same issue. Pls let me have a dmesg and a logcat log from that situation.

- Oma -  

https://codeshare.io/FtpKs
https://codeshare.io/RlI4N
https://codeshare.io/lfYZy

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2016/11/04 - 13:40
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Logs full of errors and warnings ... creepy.

A few things could influence the scenario:

- kernel forces selinux (a build running in a sandbox will have issues with external devices)
- RK61x combichip with digital out (what is going on with analog audio out?)
- HDCP encryption (authorisation issues)

- Oma -

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