Unlocking LEGO Cheat Codes in Toy Story 3 in 2020

In the July-August 2010 issue of LEGO Magazine, there is a full page ad for Toy Story 3 available on multiple consoles. However, the center of the page includes 2 LEGO-Related Cheat Codes for the DS copy of the game.

So naturally I hunted down a copy and played it for these codes on a barely-started save file. The magazine reads:

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Follow these easy steps for the DGamer ™️ exclusives that work with purchase of the Toy Story 3 game for the Nintendo DS ™️:

a) To earn the "LEGO Brick" gift, connect to DGamer ™️ in the Toy Story 3 Nintendo DS ™️ game

b) To earn the LEGO t-shirt gift, enter a game level in the Toy Story 3 Nintendo DS ™️ game. Press START, enter the "Prize" menu and enter code YRLLRY [using the buttons on the system, such as Left and Right trigger and Y]. Tap gifts to unwrap them!

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So neither of these gifts affect your gameplay of Toy Story 3, they are simply add-ons for your avatar on the kid-friendly online service DGamer. I've also seen the original DS case also advertised the LEGO Toy Story 3 sets in a paper insert next to the instructions.

Apologies on the low quality and glare of the video coverage, and unfortunately at this time I cannot access the brick gift since Nintendo WiFi Connection was discontinued in 2014 (4 years after this game's release) even though DGamer is still a service, even on mobile. Hopefully I can work around this issue and unlock it.