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Preface The A5X Expansion trimming guide is targeted for WUP-01, WUP-30, and WUP-40 boards ONLY. A guide for WUP-50 trimming can be found here. Thanks to recent discoveries, the Wii U homebrew scene is rapidly evolving. Various bleeding-edge softmods are under development and the guide will...

All are.

Oh I forgot to mention, massive props to Shank for sharing his 6 layer board scans. :)

There is no point in this existing, but it was fun to work on alongside @Mrak408! Really put my Wii knowledge to the test - which isn't very much compared to others, but it's just enough to get a working trim! Here's the real OME6A we've been yearning for, but never had until now: And proof...

A small Wii U build utilizing a LOLWUN trim.

ATM, no. IOS patches for IOS80/56/36 do exist, but the installer would need to be updated to detect vwii and use those patches. The Priiloader version that the installer installs would need to be updated too, and afaik the current priiloader is a custom build. Lastly, Hiidra would need updating...

No, it uses 5GHz WiFi. Bluetooth is too slow for constant video/audio/input streaming.

That's a good question. I'd assume it would be due to manufacturing changes or different fab houses. I just noticed that your HW1 board is revision RVO-CPU-01, meanwhile your HW2 is revision RV0-CPU-10. The copper-looking finish on the RVO-10 is quite similar to how the finish on WUP-40/WUP-50...

The testpoints on my HW2 mini are untinned. I guess it just depends on how early/late they were manufactured? It's like how the later Wii U boards (40/50) have the testpoints tinned.

ABLIC bypass You could turn it on by pressing the power button on a paired wiimote or gamepad, bridge TP9 with GND with tweezers (it acts like a power button while the console is off), bridge the PWR via next to the SMC to GND, or manually wire the front board to the SMC pins.

It has the vias you need, my wiring just didn't work fsr.

I mean when I finish the Wii U Mini project. The board mostly works fine, only issue being I have to use redNAND since I don't have the eMMC wired.

When I finish it, maybe, but at the end of the day its just cutting the board in half, then relocating whats necessary (SMC+RTC/NANDs/5GHz/BT). WiFi still has the connector, you just need to wire TP173 to 3v3 after trimming. All pinouts for that are on the LOLWUT trim guide.

Two wires from the pad on the bistro. EDIT: Also it's worth mentioning bistro has no components for charging, so you will need to do that on a seperate board.

It has a 3v and 5v regulator, though i'm not sure if the 1a output on 5v is enough to power the screen + any USB devices you might plug in.

bistro is open source on github, but doesn't have a 12v regulator for the disc drive.

You can do a similar trim to what I did for the Wii U Mini: As for power regulation, bistro takes in 1S (~4v) batteries, and has a booster to get 5v (though it only supports 1a output).

why the full motherboard? are you going to use custom regs (ie bistro/minireg)? if not, do know that 4S batteries are tricky to work with.

Yes. Two are for WiFi (Black/White), and the other two are for the Gamepad (Red/Grey).

well, good luck with the power draw + you'd need some way to provide 12v to the drive to make it actually read discs