Hacking Need help with unknown card

[1337Nemo]

Hello,

after a long time and buying myself a 3ds XL a few weeks ago, I decided to check if my old flashcards work with it. I got some old DSTT which most likely wont work and I got a R4 SDHC.
After booting it on my old DSlite I saw that it said DSi in the menu, so my guess was that it may work on a 3ds if I update the firmware. But after looking through the downloads here I didn't know which firmware to use.
I made some pictures, maybe you can help (the site printed on the package does not work anymore, r4rts.cn).
The only thing I know is that I put some custome firmware on that thing and moonshell. But that was a few years ago.

the card:

the menu:

 

[EyeZ]

You can find your firmware here http://www.linfoxdomain.com/nintendo/ds/

 

[Tom]

Look on your card in a readme to see if there is a website to get the update from

 

[1337Nemo]

You can find your firmware here http://www.linfoxdom...om/nintendo/ds/

I checked that site, but there is only firmware 2.7e, I got 2.7d. This version wont give 3ds support.
Can I install some other r4 rts firmware to get 3ds support somehow or is it just not possible with this card?

@[member='tom10122']: As I said, the package says r4rts.cn, but that site no longer works

 

[EyeZ]

You can find your firmware here http://www.linfoxdom...om/nintendo/ds/

I checked that site, but there is only firmware 2.7e, I got 2.7d. This version wont give 3ds support.
Can I install some other r4 rts firmware to get 3ds support somehow or is it just not possible with this card?

@[member='tom10122']: As I said, the package says r4rts.cn, but that site no longer works

I doubt it's possible with that card.

 

[Rydian]

Firmware upgrades are per-cart sadly.