leo60228 has posted a patch to allow BLJing for the Shindou ROM that works in 3D All Stars!
Link to BPS patch: https://cdn.discordapp.com/attachments/286612533757083648/756498528137642024/blj.bps
Online web patcher: https://hack64.net/tools/patcher.php
Patches the shindou rom rev3 (UNSMJ3.002)
sha256 f8807b5e28f1b1a31c5d3675d23ece73f949ccb553dcbb07972666a1e76adfa2
Put patched rom file (output of web patcher) on SD card at sd:/atmosphere/contents/010049900F546001/romfs/rom/Stardust_JP/01_UNSMJ3.002.bin
Run 3D All Stars while booted with Atmosphere (more info on Switch modding)
BLJs upstairs! https://www.twitch.tv/videos/745971583
Patch: https://discord.com/channels/269333940928512010/286612533757083648/756498528280379472
Twitter: https://twitter.com/leo60228/status/1307024726473072642
Implementation: https://discord.com/channels/269333940928512010/491316901692178432/756617770925555793
To any future visitors: Here's the BPS file as a base64 string, in case the download link goes down:
QlBTMQB/foIAf36CgMyJzAoIokosVIJIa5yBMiwRYY4XUeGhsftNXzDj7qQ=
Paste the above string into a decoder website such as: https://emn178.github.io/online-tools/base64_decode_file.html