Though r4isdhc.com has stoped to update 2013 R4i sdhc RTS(r4isdhc.com) to work fine in 3DS V7.1.0-16, but you can still let it pass in 3DS V7.1.0-16.
Got kernel from r4isdhc.com, you can only get kernel from http://down4.nds9.cn/2013r4isdhc-sliver/2013R4isdhc-sliver2.14.rar which is a old kernel, and they display the link in the official website r4isdhc.com, but we still find it from here: http://down4.nds9.cn.
Then i run it in 3DS V7.1.0-16, you will find error below (An error has occurred. Press and hold the power button to…..):
Now i will guide you how to update this flashcard in another website r4isdhc.hk (the Engineer official website of 2013 R4i sdhc RTS).
First you can go to http://www.r4isdhc.hk/download_silver_new2013/index.htm
Download kernel: http://www.r4isdhc.hk/download_silver_new2013/2013R4isdhc-sliverEnglish2.15.rar
Download 3DS V7.1.0-16 Upgrade Firmware: http://www.r4isdhc.hk/download_2014/3DSV7.0.0-13%20upgarde%20firmware.rar
Then unzip both kernel and Firmware to the TF card root.
Now you need update the r4i sdhc rts 2013 with a low version 3ds or nds and dsi. We use a 3ds 4.5 to do it.
Find the fwUpdateAll_V7.00.nds and click it, then you will run it and see the firmware upgrade: current version v6.02, need to upgrade to v7.00
Cilck button A to go on to see the upgrade done.
Now cyole power and turn on the 3ds, and run that firmware again you will see current version is v7.00.
Now you can run this 2013 R4i SDHC RTS flashcard in your lastest 3DS.
Also, 3dseu.com now only sell R4i SDHC RTS flashcard 2014 which is from http://www.r4isdhc.hk because they update the 2013 flashcards also.
Any questions, pls let us know!