Firmware Extraction for new Rockchip RK27xx series players.
 

There seems to be quite a few new rockchip players now being sold, these can be easily modded, but it is very important to safely backup your firmware folders first, these are located in a 60Mb "hidden partition"

Important! This procedure only works for the new Rockchip RK27xx series players.

Using windows explorer copy the rkusb.tag file to the root of the main memory of your mp4 player.

Disconnect and important to shutdown the player completely.
Wait a few seconds.

Reconnect the player to the usb and the player will restart.

Look in windows explorer for a new drive, it is the "hidden firmware partition", it should be only around 60Mb in size with 4 folders in it like this:-


APPDATA
RESOURCE
SYSTEM
SYSTEM00

http://i203.photobucket.com/albums/a...a/rkusbtag.jpg

and maybe a settings file called RKFSWFRC.FRC.

It takes quite a while for the firmware partition to appear so be patient.

Make at least 2 copies of all these 4 folders to your computer and keep them safe, burn extra copies to a cd or even better upload them to www.mympxplayer.org together with a photo of your player and where you got it from.

DO NOT delete any of these folders from the hidden firmware partition OR format the partition UNTIL you have safely made at least 2 backup copies.

Once you have a safe copy of the firmware folders you can remove rkusb.tag from the root of the main memory of the player to close the firmware partition to keep it safe

IF you have an unbranded player it is VERY important NOT to lose ANY of the firmware folders, you may never be able to replace them!

(you can download rkusb.tag from the downloads tools on this site)
http://www.mympxplayer.org/rockchip-...ion-df894.html

To upload your extracted firmware go to this page:-
http://mympx.org/Downloads (you will need to be logged in)
Then click on the link "Click here to submit a File", fill out the details and click the "Submit File" button, and please remember to include a photo of your player.

Some members are reporting that this is not working on their player, I can only guess that the manufacturer is blocking this activity by using an unknown "tag" name, if this is the case there is nothing that can be done to expose the hidden partition, sorry to say.

There are some firmwares that expect the rkusb.tag to be called something else, so all you need to do is rename rkusb.tag to:-

teclast.sys (this is used for Teclast firmwares)
or FRK.TAG this is another I discovered for an unbranded firmware on the net.

So if you find rkusb.tag doesn't work for you try renaming it to either FRK.TAG or teclast.sys and then copy the file on to the player's main memory and try again.

Afaik this only works for Windows Xp systems and Linux kernel v2.6.27 unless someone can confirm otherwise.
I know some user's have had drive mounting problems with Windows
Vista.

update:-It works on Linux too, I've tried it out, but you need new Linux kernel v2.6.27 and you still need to copy RKusb.tag on to your player.

nice find with the new tag name knob

Re: Firmware Extraction for new Rockchip RK27xx series playe
 

Worth a mention that you can easily make your own rkusb.tag at any time.
Just right click on your player and create a NEW document (any say "New Microsoft Word Document.doc") and just rename it to rkusb.tag and it works just fine.

Btw, here are some typical Rockchip 27xx series players that this firmware extraction method will work on:-

http://www.mympxplayer.org/pafiledb/...s/ta508g_a.jpg

http://www.mympxplayer.org/pafiledb/...7954392mp5.jpg

http://img.tinydeal.com/mp3/tqc.jpg

Could you please add some guide, how can I modify the firmware?

My MP4 player is the first one of the pictures you send.

have a look here for tools and howto guide

http://www.mp4nation.net/forum/viewt...hp?f=24&t=4519

oh
and only use the RK27UIEditor tool arther than the other one, reason for why is in the guide

Re: Firmware Extraction for new Rockchip RK27xx series playe
 

will this work with the MP4 player that starts up mini mp4 player that looks like the onda player?

no, sorry, they are based on older chip and firmware can not be extracted from them and updating firmware and modding needs the original firmware and getting that is a massive problem


sorry

Mini MP4 player
 

will this work with the MP4 player that starts up mini mp4 player that is the onda clone?