My Firefly RK3288 is dead.

adamo.a60

     My Firefly ie dead. I followed the "wiki.t-firefly.com/index.php/Firefly-RK3288/Build_Ubuntu_rfs/en" procedure and loaded misc.img and running miniroot successfully. The procedure failed because not enough space in /dev/mmcblk0p1. I tried with an SD card mounted on /dev/mmcblk1p1, but this was unsuccesful too. Now I want to try the recovery procedure, but this is not possible. After various attempt to get the card working, la last situation is that it doesn't respond to any solicitation. The OTG-USB cable is connected and the program is running. I tried both Windows and Linux programs and pcs, but it seems that the otg-usb it is not recognized. I have a second card, but I'm afraid to make any attempt to change somethingand put even that completely blocked.
What can I do to fix this? I spent a lot of time looking at forums in search of a suggestion, but I didn't find a solution.

Jabader

May be you can try write images of android/ubuntu to emmc by maskmod?

adamo.a60

I don't know how to enter the maskmode on Firefly and wich utility I should use.

zhansb

enter the maskmode, refer to http://wiki.t-firefly.com/index.php/Fir ... update.img

"Erase Flash"
        

adamo.a60

Sorry, but the problem is: how to enter the maskmode...

busybee

Use usb cable to connect the board with an Ubuntu PC.
Hold the RECOVERY button, then power on the the board.
On the PC, run:
sudo lsusb

Please post the result.

busybee

And I strongly recommend that you try the sd card boot.

Please follow:

https://plus.google.com/+IanMORRISON/posts/22Vxc6Sr5Ei
        
               
        
Download create-sdcard.7z, then extract it with:
# 7z x create-sdcard.7z

Download the Linux rootfs image
# cat downloadable-rfs-examples
Ubuntu 12.04 https://drive.google.com/file/d/0B99O3A ... Hg3ZWE3LXc
Xubuntu/Lubuntu 14.10 https://drive.google.com/file/d/0B99O3A ... lpTaEdfTXc

You can use either one rfs.
Move the download rootfs image to the working directory and rename it to linux-rfs.img

If you're using 64bit Ubuntu, install the 32 bit libc:
# apt-get install libc6:i386

Then run the script:
# ./create-linux-sdcard

Follow the prompt. The script will repartition your sd card and flash all the images to support sd card boot.

All commands above are run with root user.
        
               
        

busybee

The last resort is to force the board into maskrom mode.

Please have a careful look at the bottom of the board.

I've put the images here. You need to short curcuit T13 and C155. Detail steps:

      1. Power off the board.
      2. Plug out SD card if has one.
      3. Connect USB cable between board and PC.
      4. Short curcuit T13 and C155, and keep it.
      5. Power on the board.
      6. Wait some time and release the short curcuit.

The device should enter into maskrom mode.
(NOTE: Short curcuit here means connect the two points using wire or metal nipper.)



        

solid

busybee or adam can you verify the chip being shorted? busybee is he reseting the buck?

also adam, was the board soc pushed beyond 85% load? and what is your power source?

ganggangstyle-e

for my experience.
    1.in the mask mode is press reset button and quick press recovery button and release rest button and hold the recovery button
    2.you can see some debug info in serialport .
    3.when your last system is in sdcard , please take out the sdcard .then do 1 , or you'll not in maskmode.