Trio TCH1643

[cenobyte]

Ok so first of all my brother has done nothing to the player including use it since he got it about 2 years ago. The firmware on it is the same crappy one it came with.

As for the firmware extraction goes, I have hit a wall. I looked at the thread that knob suggested and tried to download the rkusb.tag file, but what I got was a read-only .rar file that I could not for the life of me extract. I first tried on my Trisquel laptop, then an Acer Windows XP, then a Windows 7 laptop and all of them could not open it. If someone has the raw file rkusb.tag, I would love to get a copy so we can proceed with the hacking. Thanks.

[mortalis]

rkusb.tag is just an empty file. You can create it by yourself.

[cenobyte]

Is it a textfile? I will try that first.

[saratoga]

Is it a textfile? I will try that first.

4th post in that thread. Which might be good for you to read before you start trying to back stuff . . .

[cenobyte]

OK, excellent! Sorry about being a little dense, I created the empty file after I reformatted the 15GB part because it was not appearing. I finally got that 58MB partition to show up, I backed it up 3 times, so how am I supposed to send you all files?  I must say even these first steps are quite exciting.

[knob]

No need to upload your firmware, others can't test it as we don't have this player.
You must do all the testing and modifying yourself!

You need to get the archos 43 vision firmware, open with imaging software and copy ALL your firmware contents to it, save the image and flash it to your player using RK27BatchUpgrade_Image

If you're on linux the hifiman wiki should help:-
http://www.rockbox.org/wiki/HifimanPort
If you are on windows then winimage or ultraIso to open the .img.

http://www.archos.com/support/download/firmware/archos43vision/1.10/Archos43.img

http://www.box.com/s/ejrm2fc43ojdv8knxed0

If you successfully revive you player, then you need to get the build environment setup to create a custom Rockbox build for your player.

[cenobyte]

Once again i apologize, but I'm not sure what to use as "imaging software". I searched my package manager and did not find much.

[cenobyte]

OK so this is how my first and possibly last attempt went. I used mount -o loop to open the .img file. Because of complaints of size, I first deleted all the contents, unmounted and remounted it and then copied all the files I backed up from the Trio player onto the image. Then I unmounted it. As per the Hifiman wiki, I put the .img file in the main 17gb partition and rebooted the device. It powered off but has not come back up since. I think I may have bricked it for good.

[wodz]

@cenobyte
rk27xx devices are virtually unbrickable but it is more involiving to recover from bad flash. I am not experienced with other players than RM970 clones but all share the same rom which provides sort of DFU mode. What PID:VID do you have after connecting your 'bricked' player to PC?

[knob]

I first deleted all the contents,

That's where you went wrong, you would have deleted the RK27BOOT.BIN. you need to only copy the original Trio firmware files over, overwriting the files such as BASE.rkw and BMP0.BIN whilst keeping the Archos image directory structure intact. The Archos image should be big enough at 67MB.

I think you will need to hook up to a windows machine and use the updater to force dfu mode and then flash the image, if you still can't get into dfu mode then its time to open the player again and force it into dfu mode as per this thread:- http://forums.rockbox.org/index.php/topic,32587.0.html

[cenobyte]

The player is not showing up under lsusb on my linux box any more, so I will try to update it via the XP machine now. If not I will try to open it (I am guessing it involves shorting of pins?)
Post Merge: April 10, 2012, 01:33:35 AMI plugged the Trio into the XP machine and downloaded a temporary copy of winimage. I opened the Archos image with winimage and used the 'inject folder' option and tried to add everything from the Trio firmware. Again, I was told there was no more space in the image so I am not sure how to go about copying files into the image without running out of space. After saving it, I tried to use the batch upgrader, but no device was detected. I may have to go to plan b for recovering the player...

[wodz]

@cenobyte
Please, please read carefully what other say to You. I bet you didn't read thread knob pointed you to. You are wasting your time as well as ours.

[cenobyte]

Ok I have read the full thread now. I examined the memory chip in my player and found it had no Samsung NAND but instead 2 seperate units. On the one with smaller pins, I connected pins 5 and 6 as per the other thread with folded foil. That caused the following device to appear under lsusb:

Bus 001 Device 040: ID 071b:3201 Domain Technologies, Inc.

but no /dev/sdx appears so I cannot really address the drive in a way I know of.
Post Merge: April 11, 2012, 02:52:19 AMI have confirmed that with the same pins shorted on the XP machine, no device appears either under the OS in general, or under the BatchUpgrade program

[wodz]

The device enumerates in rockchip specific recover mode (we call it DFU here). In this mode it will not expose any mass storage. If you have proper files you can recover the player. There are various materials how to do it. Other then this you can send arbitrary binary file to the player using rk27load utility (but this is of limited use for now as you basically know nothing about internals of the player).

[cenobyte]

OK great so I accessed the famous DFU mode! I expected to find a hard drive, but apparently not.
Post Merge: April 11, 2012, 01:39:38 PMI found this thread which is great, but I need a .rfw file, which I cannot find on the mympxplayer.org.
http://mympxplayer.org/rockchip-dead-player-recovery-guide-vt6686.html

maybe there is a way to make one?
taking a break now...