Pokéwalker only works when using hiyaCFW on DSi

[Epicpkmn11]

Your console: DSi (J), DSi (K), n3DS (U)
Launch Method: TWiLight Menu++ v0.35.1, hiyaCFW 1.3.3, Luma3DS v9.1, Memory Pit (DSi (1.4.5J))
Version used: v0.35.1
Game tested/used/applicable: IPKE (sha1: 4fcded0e2713dc03929845de631d0932ea2b5a37)

Expected Behavior: Pokéwalker works regardless of whether you use hiyaCFW.
Actual Behavior: When using hiyaCFW or on a 3DS the Pokéwalker works as expected, but when using any other launch method on DSi it is completely not detected.

Steps to reproduce

1. Launch nds-bootstrap while having not used hiyaCFW that boot of your DSi
2. Launch Pokémon HeartGold or SoulSilver
3. Attempt to connect to the Pokéwalker
4. It doesn't see it

ini: nds-bootstrap.zip

Logs

NDSBTSRP.LOG
(The log is identical when using hiyaCFW or not)

Other notes

Both White (J) and HeartGold (U) carts with a HeartGold (U) rom worked

[NightScript370]

Is this still the case?

[Epicpkmn11]

I haven't tested... Very unlikely since Pokémon G5 IR works without hiya now, but maybe it could still be the case