Hacking Hardware Picofly - a HWFLY switch modchip

[JackFrostSMT]

Ok when programming the seeed xiao I get green and red leds on the usb port leds but nothing on the big led on the bottom

 

[rehius]

Ok when programming the seeed xiao I get green and red leds on the usb port leds but nothing on the big led on the bottom

for that LED to properly work you have to bridge the detection pins

 

[JackFrostSMT]

for that LED to properly work you have to bridge the detection pins

Ahhhhhhhh thank you, I got it working now. I got a couple of these xiaos so I'll get acquainted with how to use them quickly

 

[josete2k]

https://a.aliexpress.com/_EwM6alZ


XD

 

[LazarusGX4]

..hi, i would just like to know the proper way of resetting Pico's Training Data by Bridging 0 and 1 points on the pico pcb?
i'm getting long Blue flashes then Red LED...

 

[RexSonic]

..hi, i would just like to know the proper way of resetting Pico's Training Data by Bridging 0 and 1 points on the pico pcb?
i'm getting long Blue flashes then Red LED...

You can use the pico toolbox to reset the training data

 

[LazarusGX4]

You can use the pico toolbox to reset the training data

...mine doesnt even go to "no SD" / hecate screen...

 

[LogicalMadness]

...mine doesnt even go to "no SD" / hecate screen...

I don't see anything in the definitive guide about a purple>red led code.

Purple>red led code sounds more like the HWFly that I installed into a V2. That turned out to be a disconnected emmc. I'd say double check your dat0\clk\cmd connections and inspect your emmc.

 

[LazarusGX4]

I don't see anything in the definitive guide about a purple>red led code.

Purple>red led code sounds more like the HWFly that I installed into a V2. That turned out to be a disconnected emmc. I'd say double check your dat0\clk\cmd connections and inspect your emmc.

Thanks! will try that

 

[BigHorse420]

I am interested in reading through the source code. I have tried decompiling the fw_2.65.uf2 by using uf2conv to create a bin file and then decompiling it with objdump. This did not work. I have also tried loading the uf2 files using the online editors but those have failed to work aswell. Anyone have any other ideas?

You can convert it to bin with picotool and decompile the bin with ghidra, there is info on page 30-70

 

[dave22]

Looks good! What are the wire specs and what is those transparent drops? Uv mask or hot glue?

the white wire is a awg36 and the yellow one is from a mini motor wire the glue is a b7000

 

[LazarusGX4]

...It works now

...it seems that for the RST/CPU/CLK/DAT0/CMD -- I should have used same type of wire (enameled 0.2)...

i was using a mix of kynar (awg 30) and enameled wire, and I was getting Blue > Red LED (maybe Timed Out? / Timing Issue?)

when I replaced the wires and made them the same type, I got 2 sec Blue then Green LED...

Thanks Again to All
... now time to Sleep...

 

[Dee87]

Do YOU even know?

bro whatt u mean do u even know ? did u read the las180 pages its the real deal i bet atleas 2.000 defices already have a picofly installed and succsesfully running XD

i have already installed 10 picofly in switches and they are all owned by me Xd

 

[Makc16384]

Finally I did it!

Of course, in fact, this is my first work with a soldering iron inside such devices and I encountered many problems during installation.

I strongly recommend that you use a thin magnetic wire (0.1mm) for all points except 3.3v, RST and GND (AWG30 Teflon wire is suitable for these). Also AWG30 is enough to connect one MOSFET transistor to the caps.

Instead of a microscope, I have successfully used an iPad or Smartphone in zoom mode, simply by placing it on a glass. I recommend:

Initially, I ordered such a cheap set from Aliexpress, soldered it 5 times, but it never worked:

Then I removed the transistors from it and checked it with a multimeter. They turned out to be workers. Marking: 2202a ct84y. I installed one with AWG30 wire and it worked. Solder point G only with a copper thin wire, and not like me:

Many thanks to all of you, the GBATEMP forum, and most importantly to the creator of the firmware! You are our hero!

 

[vittorio]

Finally I did it!

View attachment 366136

Of course, in fact, this is my first work with a soldering iron inside such devices and I encountered many problems during installation.

I strongly recommend that you use a thin magnetic wire (0.1mm) for all points except 3.3v, RST and GND (AWG30 Teflon wire is suitable for these). Also AWG30 is enough to connect one MOSFET transistor to the caps.

Instead of a microscope, I have successfully used an iPad or Smartphone in zoom mode, simply by placing it on a glass. I recommend:

View attachment 366138

Initially, I ordered such a cheap set from Aliexpress, soldered it 5 times, but it never worked:

View attachment 366140

Then I removed the transistors from it and checked it with a multimeter. They turned out to be workers. Marking: 2202a ct84y. I installed one with AWG30 wire and it worked. Solder point G only with a copper thin wire, and not like me:

View attachment 366141

View attachment 366142

Many thanks to all of you, the GBATEMP forum, and most importantly to the creator of the firmware! You are our hero!

I used these flats and they worked, I paid around 13 euros for them

 

[ecko4711]

So i have the next issue, maybe someone here can help me.
For a short time, my switch wasnt working completely. no charging, etc.
After fixing the brigde at DAT0 it was finally booting again, but only screen light and nothing else. fan isnt turning and yeah basically thats it. Someone any idea what else can be the issue?
As a next step I was just thinking putting the picfly back in and test it again.

 

[bilalhassan341]

Can I use a rj45 cable wire to connect mosfet to Apu?

 

[vittorio]

Can I use a rj45 cable wire to connect mosfet to Apu?

Yes i think is awg26

 

[tspfreitas]

Yes, but so far only engineering samples
View attachment 365681
I'm not quite sure if they work

can send me file

 

[deeps]

an idea/suggestion for @rehius: maybe add some info on how to boot into ofw on the "no sd card" screen?