Hacking Hardware Picofly - a HWFLY switch modchip

[linuxares]

https://www.aliexpress.com/item/100...store_pc_home.productList_2005275944377.pic_0 - what are these useful for? Use premade solder points?

 

[Adran_Marit]

https://www.aliexpress.com/item/1005004584540402.html?pdp_npi=3@dis!USD!US $12.71!US $12.71!!!!!@210318bb16828235021917221e0da6!12000029720484546!sh01!SE!0&spm=a2g0o.store_pc_home.productList_2005275944377.pic_0 - what are these useful for? Use premade solder points?

I assume they act as a mitm chip so emmc on top then that board goes to the main board with the points broken out

 

[Interceptor777]

Just changed the 2040 with a fresh one and same issue. Blue, then green flash, then boots into OFW. Did my switch suddenly become unmoddable overnight?

 

[FreeLander]

Success, my Mariko has married Picofly

I have chosen a different mosfet: IRF8736PBF because it has legs so soldering is much easier.
it looks like this:
View attachment 365542

and in my Mariko switch it looks like this:
View attachment 365543

Datasheet:
View attachment 365544
View attachment 365545

Green LED is coming on the "rp2040 one" in 1 second.
THANK YOU ALL (I've read the whole thread) it is a very hard mod but it is much fun.

Nice work. Were you able to close the shield?

 

[Blakejansen]

There are new type of adapter dat 0 not need to reflow emmc chip at all on aliexpress same it on video.

Is this the guide you used? I have noe experience with a heat gun.

 

[QuiTim]

Is this the guide you used? I have noe experience with a heat gun.

If you don't plan to reball the whole emmc chip you don't need the heatgun.
The guy in the video, Sthetix, said it himself that trying to fix the dat0 with heatgun and low melt solder created cracks in the joint afterward.
What you need to do is to properly align the adapter, measure the diode value, once you see that everything is in place apply some more presure to dat0 towards the chip and solder the 2 big anchor points first and then the other 2 points on the side of emmc (careful with those).
Also, once you solder the wire to dat0, use some solder mask to fix the wire in place so you don't yank it while soldering it to pico.

 

[cgtchy0412]

Just changed the 2040 with a fresh one and same issue. Blue, then green flash, then boots into OFW. Did my switch suddenly become unmoddable overnight?

Try to check is there a voltage on the cpu pin when pico is booted.. if not then maybe firmware issue .. if there is a voltage then likely the mosfet has broke. try to replace.

 

[lenoa]

Just changed the 2040 with a fresh one and same issue. Blue, then green flash, then boots into OFW. Did my switch suddenly become unmoddable overnight?

i think its mosfet, try to trim / shorter the wire

 

[cgtchy0412]

I’ve installed so far 10-12 picos and I did one on a oled yesterday. Switch glitches fine and works but I’ve noticed 1 out of 30-40 glitches (I test my installs a lot lol) it won’t power on after pressing the power button. I would have to hold the power button for 10-15 seconds to fully power down and then it works fine. Checked all wires, clean flux, etc. not sure what might be causing this weird random no power but again it happens very rarely. Not sure if anyone has come across something like this?

if switch cannot turn on, then most likely the mosfet is stuck on closed state... need to hard reset or you can short the gate with ground to force it to an open state. happen once on me.

 

[QuiTim]

if switch cannot turn on, then most likely the mosfet is stuck on closed state... need to hard reset or you can short the gate with ground to force it to an open state. happen once on me.

If this is the case then soldering a 3k resistor from gate to source will fix the issue permanently

 

[str41]

Hi guys, I've been reading the topic in the last few weeks, and I'm about to start the mod (if the enameled wire finally arrives..).
I have a question about the backup for boot0: I'm not 100% sure what the chip exactly does but I read that the boot0 will be 'dirty' after booting with pico installed, so how safe is to backup? Or is it clean before doing any cfw related things? (I'm planning to do emunand)

 

[Adran_Marit]

Hi guys, I've been reading the topic in the last few weeks, and I'm about to start the mod (if the enameled wire finally arrives..).
I have a question about the backup for boot0: I'm not 100% sure what the chip exactly does but I read that the boot0 will be 'dirty' after booting with pico installed, so how safe is to backup? Or is it clean before doing any cfw related things? (I'm planning to do emunand)

It's a cfw thing, plus if the boot table gets corrupted more you have a working point to get back to if that makes sense. its also an anti brick thing

 

[str41]

It's a cfw thing, plus if the boot table gets corrupted more you have a working point to get back to if that makes sense. its also an anti brick thing

Thanks! I know that it's important to be safe in case of a corruption, I just want to create backups which are clean for restore later and also wasn't sure if using emunand affecting sysnand anyway or will I be safe for online access.

Also I have another question: will the emunand be created based on sysnand? Should I remove the currently installed apps (to save space) and saved wifi networks before creating it?

 

[Brunh]

Hi I have problem I get led color white after blue after baby blue sorry my Ingles is cpu mosfet? Problem

 

[jv_233]

if switch cannot turn on, then most likely the mosfet is stuck on closed state... need to hard reset or you can short the gate with ground to force it to an open state. happen once on me.

I used a legit sx lite cpu ribbon though…

 

[bilalhassan341]

Hi I have problem I get led color white after blue after baby blue sorry my Ingles is cpu mosfet? Problem

I also got cyan colour similar to baby blue try two mosfet or single mosfet connected with two caps

 

[Minkaxy]

I got a weird issued,

1 nintendo switch v2 mariko with 1 mosfet installed after use it for 1 night, next day when it boot it says failed to init micro sd, check 3v3 rail and found a short ic at enxx ic.

Next is nintendo switch lite with 1 mosfet
When I first boot it says failed to init microsd
Same as mariko one. And I found short at enxx ic too.

Another one is
Mario with v2 flex cable everything work fine for 3 days after that it hang and when i restart
It has a boot loop at nintendo switch logo,
Found a problem is when right joy con is attach.
Can’t find any short on the board or I don’t know where but the joy con handshake is not shorted.

Oh the last one patched erista
After sleep and charged for hour after that turn it off and it cannot boot.

The led show purple then try to move wire a little bit and It can boot again. But a problem will come back.

Can anyone help or give any suggestion.

Thanks.

Edit1 : all of them use rp2040 with firmware 2.67

 

[QuiTim]

Hi I have problem I get led color white after blue after baby blue sorry my Ingles is cpu mosfet? Problem

Try to extend your solder points like this first.
If it doesn't work, add another mosfet.

 

[detilmalala]

hello guys, check, where do I have to solder the cpu mosfet cable in the hwfly, because I have one, without the flex and I want to use it, regards...

 

[NooBziN]

If this is the case then soldering a 3k resistor from gate to source will fix the issue permanently

the one you put on your switch v2 has no resistor