Hacking Hardware Picofly - a HWFLY switch modchip

[LuigiGad]

Well lucky u I tried a pled first with 1 MOSFET didn't work after that is only went with 2 cause I didn't wanna fuck around with it.

the Flex is v1 with 1 MOSFET, the motherboard is oled

 

[Dee87]

the Flex is v1 with 1 MOSFET, the motherboard is oled

Yeah I figured that after I posted my original text

 

[FreeLander]

I've always used 2 MOSFETs on everything just cause it worked , tried it one or 2 times with one but I couldn't get it to glitch.

Me too, I've always used two MOSFETs. Just recently, I switched "no pun intended" into one and it seems to be working.

I read somewhere from a guy that bigger solder joints are needed on the caps to allow the current to pass through. Dunno. It just works in my case

 

[cgtchy0412]

Hi, Anyone had experience and succed in emmc reballing but [ ONLY ] using these point. As i see only those are connected through vias.

 

[Dee87]

Hi, Anyone had experience and succed in emmc reballing but [ ONLY ] using these point. As i see only those are connected through vias.

View attachment 381438

But why would u only want to reball to these points? doesnt make any sense, just reball it as a whole and be done with it

 

[abal1000x]

I try to find link on aliexpress on green adapter on emmc, but can't find even once. I remembered theres seller on aliexpress like 1-2 month ago.

 

[cgtchy0412]

But why would u only want to reball to these points? doesnt make any sense, just reball it as a whole and be done with it

Two reason because it will be faster and also i dont have the stencil.

 

[Dee87]

Two reason because it will be faster and also i dont have the stencil.

well i always to with stencil and paste , that would even make it more work.
i mean just try it then youll see how good it goes , most of the emmc pins are just grounds or nc

 

[deeps]

Hi, Anyone had experience and succed in emmc reballing but [ ONLY ] using these point. As i see only those are connected through vias.

View attachment 381440

I bet your emmc won't be super excited about not getting gnd and vccq

 

[QuiTim]

I try to find link on aliexpress on green adapter on emmc, but can't find even once. I remembered theres seller on aliexpress like 1-2 month ago.

here you go https://vi.aliexpress.com/item/1005004456312332.html

 

[cgtchy0412]

I bet your emmc won't be super excited about not getting gnd and vccq

Yup .. i redid the pic.. it cover all rounded pads now, and left out the non rounded one.. Will it work now?

 

[QuiTim]

Yup .. i redid the pic.. it cover all rounded pads now, and left out the non rounded one.. Will it work now?
View attachment 381443

This will work no doubt but only if you manage to put in place perfectly, and it is much more difficult to achieve this type of installation if you are using only couple of points underneath.

The main problem/concern here is that you just don't have enough solder balls/points to create the necessary surface tension to keep the chip in place when reflowing also the weight of the chip will put too much pressure on these few balls and make them flat and risk shorting to the neighboring point.

If you want the fastest way, use solder paste and reball jig.

 

[Menacer]

if you get black screen when booting ofw then the software on the sd card is not the problem. I would try adding stronger resistance on dat0/cmd. I normally use 100 ohms each to avoid ofw issues.

My resistors from ali arrived today. Added 100 Ohms to dat0/cmd. Slow EMMC issue is gone and booting to CFW/OFW works just fine now! Thanks a lot for the tip, even though it's mentioned in the guide, I would have probably not figured it out.

 

[rsilveira1991]

Hi guys.
About DAT0 on OLED.
Is recommended solder the ball or just press?

 

[frozenboy]

v1
View attachment 381311

Lite
View attachment 381312

v2 (From @raksmey1231)
View attachment 381313

oled (From @raksmey1231)
View attachment 381314

I have checked your oled pinout, it seem the orange pin is just suitable for D and yellow next to it for gnd. both pin is huge and got big cap that easy to soldering. Have you tried it, maybe next time I would give it a shot

 

[Superghetto420]

Got this offer on a local craiglist:
View attachment 341370View attachment 341371 View attachment 341369

The seller says it's a new RP2040 Picofly based version modchip for Switch Lite and Oled, only.

What do you think about it, looks like it's a clearly fake, am I right?.. Or not?

This thread spawned and blew up because of some dude off craiglist...... Sweet!!!

 

[deeps]

This thread spawned and blew up because of some dude off craiglist...... Sweet!!!

I have mad respect for that dude though, he was obviously pretty damn clever and skilled

 

[Switxh]

This thread spawned and blew up because of some dude off craiglist...... Sweet!!!

Yeah props to that guy! Does anyone know if the firmware Rehus is graciously developing for us is in any way related to the original craigslist discovery? Or was the Picofly firmware we use a result of starting from scratch? Either way it's very impressive and I can't say thank you enough to everyone involved!

 

[vittorio]

Yeah props to that guy! Does anyone know if the firmware Rehus is graciously developing for us is in any way related to the original craigslist discovery? Or was the Picofly firmware we use a result of starting from scratch? Either way it's very impressive and I can't say thank you enough to everyone involved!

what discovery did craigslist make?

 

[Switxh]

what discovery did craigslist make?

I meant that the Picofly was first discovered on Craigslist. Check first post of this thread.