CYX_809III V5_0 20140510 (CX-919, MK809IV clone) not connecting to PC as USB device for flashing / rooting

[cuivienor]

I think it is possible to write on the NAND from a linux on the sd-card. See for example http://linux-rockchip.info/mw/index....=Linux_on_NAND
I was able to dump the data on NAND from the mtd device from the serial console when the stick boot with the default android.

However, this is not the main problem... This Rk3188 stick has a uncommon wifi/BT module (ESP8089), so if we want to update/change the system, we have to find (or compile) a kernel with the good driver for this module. Moreover the module is connected by GPIO to the RK3188 chip, and one have to find the good GPIO pins...

Hello there!

Same device, same issues. Seems to me they disabled flashing on purpose. Ubuntu boots from USB with no issues, but of course no Wifi. There seems to be one ROM (KitKat) that works great with the Wifi and Bluetooth chips of the device, but of course, we can't flash it... how to flash from SD? Has anyone tried to just put an img file at the root of the SD and put it in flash mode?

So disappointed by this thing... So much wasted potential...

Yannick

[Ancharas]

I tried - no result. I wrote about flashing from SD in my previous message.

[cuivienor]

I tried - no result. I wrote about flashing from SD in my previous message.

Well it seems that the Radxa (same chipset) has a way of flashing from the SD card: http://wiki.radxa.com/Rock/SD_upgrading

Maybe, using the 4.4 Android image mentioned earlier in this thread, we could actually force a flash from SD card?

[Ancharas]

I tried to to use Rockchip create upgrade disk tool to update firmware. I used 2 firmware IMG, but after I plug SD in my device and turn it on, I just see "No signal" message on my TV. If I reboot my device without SD, native firmware starts.
It seems that this method does not work on our devices.

And I found one more possible solution. Some owners of similar devices say, that they have same Windows message after unsuccessful firmware upgrade. One guy solved this problem by connecting device to PC with USB 1.1 turned on. Some PCs have BIOS option that can switch USB 2.0 to USB 1.1 (Rockchip tool does not work on USB 3.0). So can anybody check this information? Unfortunately I checked all available PCs, and none have this option.

[CoolerKing]

This option is usually called hi-speed / full speed, where USB 1.1 is full speed.

[sam321]

Hi I have been watching this Thread for a few days now and I have been working on the problem. However it is not perfect, it is possible to boot android from the SD card only and this is what I have been doing. I am currantly modifying the Rom from the Radxa Rock and changing the kernel so that WiFi works. If you want to try it out without any WiFi or blue tooth go here http://wiki.radxa.com/Rock/prebuilt_images#Android_2 and download the SD card KitKat image and burn it to a SD card . I do plan on making a ROM and if I get everything working I will share it. However I strongly recommend that if you own one of these sticks return it if possible as it is faulty


"Whatever you do not try flashing the ROM to the NAND it will boot loop. only use the one that boots from the SD card"

[Ancharas]

I hope you will succeed. And can you give a link to ROM, that you tested? For example I can't burn this one: http://dl.radxa.com/rock/images/andr...626_sdcard.zip because I have a message "Opening firmware fails" from Rockchip tool. Now I am downloading another one.

[sam321]

you are using the correct file but you are not using the correct program to burn the card with, you must use Win32DiskImager. See here for instructions http://wiki.radxa.com/Rock/SD_images

[Ancharas]

I see, thanks. It really works, sure, with no WIFI. Maybe tehere is any information, how can I integrate necessary drivers? I could try.

[sam321]

I see, thanks. It really works, sure, with no WIFI. Maybe tehere is any information, how can I integrate necessary drivers? I could try.

it is not going to be easy to make the WiFi and bluetooth work, it is not as simple as just integrating the drivers. The following needs to be done

1: build a custom kernel from source
2: modify the boot partition, and then integrate the driver's into the system partition
3: lots of cleanup and testing and then create a SD image

[Ancharas]

Hmm... It looks really not easy.

[arthy]

I tried this method : http://wiki.radxa.com/Rock/SD_upgrading
with the following rom : cyxtech_rk31_dongle_8089+6622_4.4_140402.rar
It does not work, I obtain this : http://www.arthy.org/CYX_809III_V5_0...sh_from_sd.txt

But I am not able to boot anymore on by NAND (even before the previous try). I don't know if my NAND was destroyed by too many pins shortcuts, if it is a device malfunction or if it as a "software" mishandling

[Ancharas]

I don't think it's a hardware problem. Try to make bootable SD Radxa (see above). Your device should boot up from SD, but you'll have no Wifi.

[Ancharas]

Hi I have been watching this Thread for a few days now and I have been working on the problem.

Will it be useful for you, if I will find suitable for our hardware ROM from another RK3188 device with ESP8089 Wifi driver? Is it possible just convert it from format for flashing to format for SD booting?

[sam321]

no unfortunately as the kernel needs several modifacations to boot from SD card. I have been trying to build a kernel that works, and I am not having much luck. I think that I need the latest source from the Kit Kat kernel wich is not exactly available I think, could be wrong, don't know, however I know some people that I can ask. Things have changed quite a lot since I left being a ROM developer, I am only really doing it to help a friend out and I might as well help others while I am doing it