Why do you need the R4 Firmware(Kernel)? 

The Firmware (or Kernel as it is more commonly called) is the heart and soul of the classical R4 cards.It's the boot loader,UI and OS of the R4 cards,Like the PC needs the Windows,iphone needs the IOS...If you don't install or copy the kernel files to the micro sd card,your R4 cards can't be recognized by the Nintendo 2DSXL/NEW 3DS/3DS/2DS/DSi/DS console.So the first thing when you receive R4 card is to install the kernel file of the exact R4 Card. There are many r4 cards on sale,different r4 cards use different kernel,but they are very similar. The usage is almost the same.The R4 3DS firmware is what will install the menu, and allow you to load all of the games, applications and software you have on your R4 Card.

All the firmwares are free software,you can download from our site or from official sites .The firmware will upgrade frequently. New firmwares generally will upgrade the compatibility and stability.Only when you have miss some issues will you change to the new firmware.

All the following R4 card firmwares are supporting DS Games on the latest 3DS System Version 11.9.0-42, so you can choose any of these flash cart to play Free Thousands DS games on your machine and enjoy the homebrews too. The best one of them is R4I 3DS SDHC RTS.

Common Guide of the micro sd card:

  1. Download the kernel file ( kernel is not the upgrade patch) 
  2. unpack the file and copy all the files to the root folder of the micro sd card.
  3. copy some game roms (xxx.nds) to the root folder of the micro sd card.
  4. insert the micro sd card into your R4 Card. And plug the R4 Card into the NDS console.

R4i-SDHC 3DS kernel download(withmark)

  Please you choose to download the R4i SDHC 3DS language version of the kernel. Latest version: V1.85b. Updated Date:[2018-09-04]
V1.85b 2018-09-04
V1.85b 2018-09-04
V1.85b 2018-09-04
V1.85b 2018-09-04
V1.85b 2018-09-04
V1.85b 2018-09-04
V1.85b 2018-09-04
V1.85b 2018-09-04
V1.85b 2018-09-04
V1.85b 2018-09-04
V1.85b 2018-09-04



R4i Gold 3DS (PLUS)  kernel download


WOOD R4 V1.64 Released. (2013-11-08)

WOOD R4 V1.64 Released,please download for your R4i GOLD card.
Latest Version:V1.64 Updated Date:[Nov.08,2013]
kernel 1.64


R4i SDHC Dual Core/R4i SDHC RTS Lite/R4i-Gold Pro

All the below R4iSDHC 3DS firmwares you need to download from here, their latest version is V4.0B, updated on this day 2018-12-03.

r4i sdhc firmware

Ace3DS PLUS for 3DS XL/2DS/3DS/DSi/DS  


ACE Wood firmware V1.62 ------- 2013 / 08 / 17     kernel 1.62

AOS V2.13 ------- 2013 / 08 / 17    AOS V2.13

Built-in Wood firmware and some powerful Emulators such as
FC/SFC/GB/GBC/MD/ NEOGEO/ATARI/PC-Engine and Moonshell V2.10
Support 3DS 7.2.0-17 

If you also need help on how to install R4 firmware or kernel on 3DS or NDS machine, e-mail to [email protected] or go to our discord, you can get help and answers.