Hardware I think i bricked my new 3ds, which and where can i get a flashcard within uk

[lpoolm]

So i have hard modded a few 3ds/2ds with no issues ever!
except today, followed this guide (used a few times) everything seemed to go fine, backed up nand, changed nand to custom and installed. turned off then back on and stays on this blue screen!
I assume its bricked so want to try and reinstall my backup nand but it looks like i need flashcard and magnet.
So does anyone know where i can order one from within the uk please that will not take ages to arrive!
thanks

 

[TurdPooCharger]

Did you recheck your hardmod handwork within the N3DS? Anything out of place?

Here's GBAtemp sponsor for 3DS ntrboot flashcart. This is the go to choice. https://www.nds-card.com/ProShow.asp?ProID=575