This R4 III (R4 v3) Firmware Download page will help you download the lastest R4-III Firmware file which will work best for you. 

R4 III Firmware Download Below:

01- R4 III v3.11 Firmware (English) 2009-7-20      Download 

02- R4 III v3.11 Firmware(Dutch) 2009-7-20     Download

03- R4 III v3.11 Firmware(French) 2009-7-20    Download 

04- R4 III v3.11 Firmware(German) 2009-7-20      Download

05- R4 III v3.11 Firmware(Italian) 2009-7-20    Download

06- R4 III v3.11 Firmware(Japanese) 2009-7-20    Download

07- R4 III v3.11 Firmware(Malay) 2009-7-20     Download

08- R4-III v3.11 Firmware(Portuguese) 2009-7-20  Download

09- R4-III v3.11 Firmware(Spanish) 2009-7-20  Download 

10- R4-III v3.11 Firmware(Korean) 2009-7-20  Download

How to update R4-III?

If your R4 Upgrade III kernel is below 3.02 ,When you upgrade the new kernel ,please don't cover it directly, You'd better to format the microSD TransFlash(TF) Memory card first ,and then copy the new kernel to your micro SD card. After downloading and decompressing the new updated files, copy all files to the root directory of memory card to replace the former files