Hacking Hardware Picofly - a HWFLY switch modchip

[aleciobr]

Hey guys, I'm having this problem on a Nintendo Switch

 

[cgtchy0412]

Hey guys, I'm having this problem on a Nintendo Switch

Recheck your atmos version supported firmware and switch firmware should match.
Or try default atmos without using any custom packs.

 

[aleciobr]

Recheck your atmos version supported firmware and switch firmware should match.
Or try default atmos without using any custom packs.

i try and nothing working

 

[Blakejansen]

Use some kind of magnifier, scratch it until it change color from green(pcb mask) to gold/yellow(copper), after that let the solder tin and flux do the talk.

What does an over scratched point look like?

 

[cgtchy0412]

i try and nothing working

you are using sysmmc or emummc ? also what switch firmware is based on 16.0.3 or 16.1.0 ?

Post automatically merged: Sep 7, 2023

What does an over scratched point look like?

i believe you can find some picture somewhere in this thread, its either traces are cut or via are destroyed.

 

[Guyton100]

I am flashing firmware on picofly wondershare device.
Here is what I am doing-
1 Press boot menu and simultaneously plug usb c end into USB port. (No led response, PC detects portable device in explorer)
2 Drag firmware 2.74.uf file into the rp2040 device folder (no led response on the RP2040 board is observed)
3 Explorer window automatically closes with no change in led status on RP2040
4 On reinserting without pressing boot button, its blinking long blue followed by short green blinks continuously.

My question is,
1 How can I know that I have successfully flashed firmware?
2 Is there any way to check firmware on RP2040?

Guide mention that it should blink red for successful flash and even first page is not clear about the procedure.

 

[cgtchy0412]

My question is,
1 How can I know that I have successfully flashed firmware?

You already succeed.

2 Is there any way to check firmware on RP2040?

Guide mention that it should blink red for successful flash and even first page is not clear about the procedure.

Firmware will will first check and give error rst not connected (short - short) blinks if nothing is connected, so by this then you know that firmware is already running on pico.

 

[Dee87]

I am flashing firmware on picofly wondershare device.
Here is what I am doing-
1 Press boot menu and simultaneously plug usb c end into USB port. (No led response, PC detects portable device in explorer)
2 Drag firmware 2.74.uf file into the rp2040 device folder (no led response on the RP2040 board is observed)
3 Explorer window automatically closes with no change in led status on RP2040
4 On reinserting without pressing boot button, its blinking long blue followed by short green blinks continuously.

My question is,
1 How can I know that I have successfully flashed firmware?
2 Is there any way to check firmware on RP2040?

Guide mention that it should blink red for successful flash and even first page is not clear about the procedure.

Why are u using 2.74 , its depreciated .
Use 2.73

 

[Guyton100]

Why are u using 2.74 , its depreciated .
Use 2.73

Thanks for advice, can i flash directly old firmware? Or I need to flash something else before to clear the older version?

 

[Dee87]

Thanks for advice, can i flash directly old firmware? Or I need to flash something else before to clear the older version?

Just flash it over

 

[deeps]

Quick questions:

1- Can picofly toolbox payload through hekate be used to downgrade rp2040 without removing it from the switch? I have an oled switch with the unstable version (2.74) installed. I think that's why it gives the "failed to init sd card" error, and I would like to put it at 2.73

2- Should the 100ohm resistors be placed replacing all the 47ohm ones? That part I still don't understand.

1. yes, just put the update.bin from 2.73 in the root of the sd card, run the toolbox and press update

2. i assume you're talking about a hwfly rp2040 chip? then you can either replace the 47ohm resistors for dat0/cmd with 100 ohm ones, or you can add another 47 ohm resistor between the wire and the point on the chip for dat0/cmd. Clk should still have 47 ohm.

 

[twins333]

1. yes, just put the update.bin from 2.73 in the root of the sd card, run the toolbox and press update

2. i assume you're talking about a hwfly rp2040 chip? then you can either replace the 47ohm resistors for dat0/cmd with 100 ohm ones, or you can add another 47 ohm resistor between the wire and the point on the chip for dat0/cmd. Clk should still have 47 ohm.

Honestly, I would not update the hwfly rp2040 chips with the latest firmware. There's no telling if the manufacturer changed something with the firmware they flashed on their products. I would ask the manufacturer/seller for firmware updates. Also please use this thread for hwfly rp2040 clones/chips:
https://gbatemp.net/threads/hwfly-shaped-picofly-boards-start-shipping-in-china.632179/

Sorry deeps, I wanted to quote mrskinner . I know you know where to post hwfly rp2040/core questions.

 

[Guyton100]

I am getting BSOD after trying picofly. I just applied solder to tge solder points and thought I will complete it in daylight.
Went through the forum, cleaned my soldered points and flux but still BSOD.
Attaching images, please someone have a look at it.

 

[Mr Skinner]

1. yes, just put the update.bin from 2.73 in the root of the sd card, run the toolbox and press update

2. i assume you're talking about a hwfly rp2040 chip? then you can either replace the 47ohm resistors for dat0/cmd with 100 ohm ones, or you can add another 47 ohm resistor between the wire and the point on the chip for dat0/cmd. Clk should still have 47 ohm.

Thx for all responses.
Ive updated the picofly oled's firmware. Easy peasy.

The chip in question is our good and beloved picofly. Sometimes I forget the name and call it by the chip itself, which is rp2040. . About the resistors, I understood perfectly. I ended up trying it out in practice a few hours ago. A lite switch that was modding gave an led error and took a long time to glitch, which only resolved by putting the 100ohms according to his instruction. works smoothly.

 

[Dee87]

I am getting BSOD after trying picofly. I just applied solder to tge solder points and thought I will complete it in daylight.
Went through the forum, cleaned my soldered points and flux but still BSOD.
Attaching images, please someone have a look at it.

a closer look to those solder pads would be nice , some of them pads seem ripped/no solder on them if u had the solder iron to hot and held it in to long it might be possible u took some pads of

 

[Guyton100]

a closer look to those solder pads would be nice , some of them pads seem ripped/no solder on them if u had the solder iron to hot and held it in to long it might be possible u took some pads of

Can you point where exactly? I will try to post high quality images tomorrow

 

[deeps]

Can you point where exactly? I will try to post high quality images tomorrow

 

[musicislife6984]

How do you reverse the led on the rp2040 tiny. I am getting a green led when flashing the firmware. I saw that you could bridge 2 points on the back of the zero, but I don’t see those points on the tiny.

 

[Dk2022]

How do you reverse the led on the rp2040 tiny. I am getting a green led when flashing the firmware. I saw that you could bridge 2 points on the back of the zero, but I don’t see those points on the tiny.

For red led , bridge the two points.
But, if you use firmware 2.70+ , no need bridge the two points.

 

[musicislife6984]

For red led , bridge the two points.
But, if you use firmware 2.70+ , no need bridge the two points.

Thank you I bridged the user mode point but it is still flashing green. But I assume since I am using 2.73 it is not required?