The LOLWUN is real!!
Over the past few weeks I gained an interest in trimming the earlier Wii U board revisions. The WUP-50 will always have the superior trim, but with them being so rare compared to the WUP-01/WUP-30 (and to some extent, the WUP-40), it makes more sense to trim one of the common rev's than to risk breaking a WUP-50. I can't say I'm not a little bit bummed about how much bigger the LOLWUN is to the LOLWUT, but the fact it can be trimmed at all is super exciting!
Let me introduce, my trimmed WUP-40:
It's only slightly bigger than the LOLWUT, with the dimensions being around 123x95mm.
That's not too bad with it having a much larger SoC, along with the RAM being further out.
I haven't relocated any of the wireless modules yet, but those can always be done later. They don't halt booting into the Wii U Menu, it just makes doing anything impossible.
I have talked with Yveltal a little about the LOLWUN, it is going to stay an "experimental" trim for a little while. I'm not sure if it will ever be added to the guide.
Here is a video of me restoring a vWii NAND dump on the trim:
Along with this post, I want to share the pinouts I drew up while working on the trim:
(None of these are as fancy as the ones Yveltal made for the trim guide, but this isn't a guide, so its fine, probably)
I drew up this pinout
months ago (right after the LOLWUT guide was released). It is meant to match up with the pinouts shown for the NAND/eMMC/WiFi/de_Fuse on the LOLWUT guide. The bare numbers mean the ONFI NAND, e means eMMC, d means DEBUG (for de_Fuse), and w means WiFi. Ignore the "TP2" via. That does not go to TP2, and its not useful in trimming.
SMC wiring. I had used the WUP-01 board scans to find the I2C pins, nRST I managed to find by poking TP144 and the SoC pins with a multimeter.
The nice part about having everything so spread out is that you get to keep some of the SD resistors by the SoC. Since I didnt label them on the picture, I will do so here:
Green - CD Dark blue - DAT1 Lighter Purple - DAT0 Orange - CLK Darker Purple - DAT3 Light Blue - CMD White - WP
The
green-ish trace is DAT2, that is the only resistor for the SD card I trimmed off.
The pinout here is meant to match up with the pins above. I'm sorry I didn't label them properly!
This is for the front panel, soldering the pins there makes the wiring cleaner IMO.
The SD slot pins and the front panel pins are identical between all revisions.
I hope this post gives someone the inspiration to trim one of these Wii U boards! Yveltal has said in the past that the bistro should be fine enough to power the A5X. For cooling, I would recommend sticking with the stock heatsink since you can actually properly mount it here (if you don't have the WiFi module that is).
and
maybe the stock fan (or whatever fan you want I guess). You want the fan to be blowing air into the heatsink.