
V2 Picofly mod — Hekate works, but OFW/CFW black screen + Battery Info errors
I’m close to giving up on this V2 Switch mod and would really appreciate some advice.
I followed the full V2/Picofly installation process from the NanoFix YouTube guide. The console boots into Hekate normally, but I cannot reliably boot anything beyond that.
Current situation:
Switch V2 / Mariko
OFW: 22.5.0
23 burnt fuses, which seems correct for 22.5.0
Latest Hekate/HATS
Atmosphère 1.11.2
Original SanDisk SD card
eMMC benchmark looks good with no read errors
SD benchmark also looks good
Hekate detects the eMMC and partitions normally
OFW → black screen
Semi-stock SYSMMC → black screen
CFW SYSMMC → black screen
CFW EMUMMC → usually black screen
I managed to boot into emuMMC and reach the HOME menu briefly once, but it froze and then went black
Occasionally I get Atmosphère fatal error: Program ID: 0100000000000005 std::abort() called (0xffe)
I previously saw Pkg1 decryption failed / BEK missing, but that disappeared after changing to a different clean package.
The main thing that looks abnormal is Hekate → Console Info → Battery. It shows errors for:
- Fuel Gauge IC
- Battery Charger IC
- USB-PD IC
However, the battery itself appears to work. The console charges, stays powered in Hekate for a long time, and when I briefly reached the emuMMC HOME menu, it showed a battery percentage.
I also don’t see any obvious damage on the battery-side area of the motherboard.
Could the battery/I2C communication errors be responsible for OFW and Atmosphère black-screening even though the battery still charges and powers the console? Or does this sound more like a software/firmware issue or a Picofly soldering/board issue?
Has anyone had similar symptoms—Hekate working normally, good eMMC/SD benchmarks, but every HOS boot black-screening—and managed to fix it?