So, this link:
Deposit Files
sorry for Deposit, but it's only one way for me
Readme included.
Small how-to:
1) I assume that you have working rk27sdk build for you player. If not, it's not for you at now, I will try to finish Patch on next week...
So, copy directory /Application/Elfloader from my rk27sdk to you working build. Also you need to replace file System/Cpu/arm/boot/startup.s with one from my archive.
2) Open you project and add files elfloader.c, elfloader.h and swilib.c to it.
3) Now you need to make entrypoint. For example, see file Application/MainWin/MainWin.c, function OtherFuc in my archive - instead of stupid stopwatch player will run "C:/elf.elf".
4) Now install iar 4.42 (included in archive), unpack RockElf.7z and open file pbl6a/fonarik.eww in IarIdePm.exe (located at InstallDir/common/bin/). Compile and copy result file Release/Exe/elf.elf onto system partition of player.
5) Reboot player with new Fw, go to stopwatch and run elf
Then connect player to pc and on system partition you should see surprise
Good luck!