This listing is NOT for an N64 cartridge, it is for the service of updating existing cartridges that you already own.  This will NOT work with an original super smash bros. cartridge.  It only works on smash remix cartridges.

DUE TO THE AMOUNT OF PEOPLE PURCHASING THIS AND NOT READING THE DESCRIPTION, IF YOU DO NOT READ THE DESCRIPTION AND PURCHASE THIS EXPECTING TO RECEIVE A CARTRIDGE, YOUR ORDER WILL BE CANCELLED. YOU HAVE BEEN WARNED.

DUE TO THE AMOUNT OF PEOPLE PROCRASTINATING SENDING THEIR CARTRIDGE (FOR SOMETIMES MONTHS): IF YOU DO NOT SEND YOUR CARTRIDGE WITHIN ONE WEEK AFTER RECEIVING A REPLY OF THE ADDRESS TO SEND YOUR CARTRIDGE, YOUR ORDER WILL BE CANCELLED.  YOU HAVE BEEN WARNED.

Note, you will receive a fair volume discount for updating more than one cartridge at a time.  Repeat customers also will receive a 30% discount.  If you're a repeat customer, send a message before or after purchase.  I'll refund 30% of the listing price (excluding the cost of shipping).

That beings said:

This listing is offering to update your existing Smash Remix cartridge to the most recent update.  In this case, that would be version 1.5.2 which has all of the most recent updates including Sonic the Hedgehog, Sheik (from Legend of Zelda games), King Dedede, Marina, Goemon, Banjo-Kazooie, Dragon King, Ebisumaru Peppy, Slippy, and all the other characters seen in the photo.  The latest version as of this post is v1.5.2, with over fourteen new characters and too many new stages to count.

You will be sending me your copy of smash remix, and I will update it using special hardware.  Then, I will be mailing it back.  You will pay for shipping.  I offer a large volume discount for more than one cartridge being updated simultaneously.  This update will work on any smash remix cartridge that you have purchased on Etsy, eBay, Aliexpress, etc.  It doesn't matter what version it is, it can be updated to the most recent version.

MESSAGE ME AFTER PAYING FOR THIS LISTING, AND I WILL SEND YOU THE ADDRESS TO SEND THE CARTRIDGE TO IN ORDER TO HAVE IT UPDATED.  IF YOU DO NOT MESSAGE ME AFTER PAYING, YOUR ORDER WILL BE CANCELLED.  MESSAGE ME REQUESTING THE ADDRESS IMMEDIATELY AFTER PAYING.

Once I receive your cartridge, I will update it and get it back in the mail in as little as 3 business days.  The cost of shipping of this listing pays for me to ship it back to you.  Of course, this shipping cost doesn't cover the cost of sending the cartridge to me.  You will pay out of pocket for that with whichever carrier you decide to use.

If I am unable to update your cartridge (which is very unlikely) I will send your cartridge back to you and refund the service cost.  You will lose the cost of my shipping back to you if this is the case.  This has never happened, and I've successfully updated 100% of the cartridges I have received, so don't worry about that.

If you have questions, feel free to ask!  I'm happy to help!