How to update the R4iSDHC RTS Firmware ?

You can just follow below steps to install the kernel.

1. Download the archive (mentioned at below) to your computer.
2. Insert the MicroSD card into your MicroSD card reader.
3. Insert the MicroSD card reader into your computer.
4. Open the file explorer of your computer and open your MicroSD card drive.
5. Extract all the files from the downloaded archive to the root of the MicroSD card.

R4iSDHC RTS 3DS Software Download

The R4iSDHC RTS is created by www.r4isdhc.com, The R4iSDHC RTS is a different from R4i SDHC (www.r4i-sdhc.com) .The R4iSDHC RTS is compatible with lasted Nintendo 3DS Console, DSi & DSi XL /LL V1.4.3 ,DSi Lite and DS. Please Download the following R4iSDHC RTS Firmware .

R4iSDHC RTS 3DS Upgrade Firmware Download

R4ISDHC RTS 1.43 Upgrade Firmware Download

R4ISDHC RTS Firmware Upgrade procedures(3DS)

R4ISDHC RTS Firmware Upgrade procedures(V1.43)