Hacking Hardware Picofly - a HWFLY switch modchip

[handsom_tomato]

When updating v2 Mariko Samsung eMMC from 2.70 to 2.72, the error message "== CLK is not connected" occurs, and I am unable to update the firmware. It remains at version 2.70.

 

[LogicalMadness]

woops, I completely missed the reply. In regards of the sarcasm stuff I'm not used to the notifications of GBATemp and I missinterpreted that comment as a reply to my direct comment, my bad I'm still learning my "foruming".

As for the lenght, I agree. I can try to make them a little more flush on the board. I'll definitely take that advice

As for shorts, I usually run continuity mode to the next-most points to confirm if they're shorting or not, but I couldn't pinpoint anything at the moment I performed the check... maybe it happend after I closed it if at all?

In regards to the mosfet I think that's due to the angle I took the photo. They're actually not touching, let me post another picture rq.View attachment 372279

I was most concerned with the emmc connector or the motherboard socket for said connector.

 

[FlowerFire]

Is 0.1mm wire good for SDA/SCL or should I do it thicker?

 

[abal1000x]

Is 0.1mm wire good for SDA/SCL or should I do it thicker?

Its okay.
It is used only for communication, 0.1mm is more than enough.

Only power purpusos such as 3.3V, GND, Mosfet S and D which use a bigger diameter (>0.2mm).
Anything else is okay to use 0.1mm.

 

[MegaDeKay]

let's get the party started

https://github.com/rehius

Instantly cloned the two repositories, just in case

 

[abal1000x]

Instantly cloned the two repositories, just in case

Already compiled it, and success generated the uf2, but still not yet test it on real device.
I don't know the purposes of busk, only compile usk.

 

[happytvgame]

 

[abal1000x]

Try playing something until it got heated, then reboot.
For me, when it got heated, the glitch failed.
Wait like 1-3 minute, than its working again.

 

[blackheartme]

anyone have examples of single mosfet installation photos on lite v2 or oled ?, im so used to using double mosfet its a bit confusing

 

[lightninjay]

anyone have examples of single mosfet installation photos on lite v2 or oled ?, im so used to using double mosfet

Here's a classic

 

[blackheartme]

Here's a classic

okay thanks dude will try later

 

[rehius]

When updating v2 Mariko Samsung eMMC from 2.70 to 2.72, the error message "== CLK is not connected" occurs, and I am unable to update the firmware. It remains at version 2.70.

oh, please download files again

Post automatically merged: May 19, 2023

Already compiled it, and success generated the uf2, but still not yet test it on real device.
I don't know the purposes of busk, only compile usk.

usk is "no_flash", so you have to use prepare.py to make a complete .uf2
until that the firmware is RAM only

 

[raksmey1231]

What version of the fw are you using on Pico. It looks like 2.72 might have an issue with samsung emmc on Oled

My pico FW is 2.72. How can I fix it?

 

[abal1000x]

usk is "no_flash", so you have to use prepare.py to make a complete .uf2
until that the firmware is RAM only

I read in the readme in busk. Do we need to modify the memmap_default.ld in the pico_sdk according to that address?

I try to compile busk (without changing the memory map), but theres error in main.c, needed file pins.h.
I try to copy pins.h from usk, and the compilation succeed. Is it the same file?

Then i run prepare.py on usk finally generated firmware.uf2.
This is the uf2 that we usually copy, isn'it?

Thank you for sharing the code.
I think the knowledge will be usefull to other project.

Never realize that rp2040 this powerful.
I've euphoria with the rp2040 when they first release it.
This is the first time rpi create their own chip.
But disappointed because the vref is buggy.
Then i think at that time the pio is kind of useless.
(Now i suck my own word about the usufullness of the pio)
And it broke my smartphone, when i playing around with uv sensor.
I disapppointed with the rp2040 and use esp32, since they have wifi.
So do not need to use the usb otg to transfer information.

 

[rehius]

I try to copy pins.h from usk, and the compilation succeed. Is it the same file?

yes

This is the uf2 that we usually copy, isn'it?

yes, + update.bin

I read in the readme in busk. Do we need to modify the memmap_default.ld in the pico_sdk according to that address?

I think it would work without such modifications. I do that just in case since in a boot process the main firmware overwrites interrupt vector table

 

[handsom_tomato]

oh, please download files again

Post automatically merged: May 19, 2023

usk is "no_flash", so you have to use prepare.py to make a complete .uf2
until that the firmware is RAM only

I successfully updated to version 2.72 using the new update.bin　Thank you!

 

[abal1000x]

Just want to say thank you at @rehius for this wonderful glitch project (and the source code).
And to @flynnsmt4 for the knowledge on advance RE of rp2040 (and the emulator source code).
Theres lot of knowledge i gain from it.

 

[tsukimaru]

What changed in v2.72? Also is the color code different? I had a strange behavior whee the glitching starts until after the console started booting and this never happened on v2.67

 

[raksmey1231]

What is the problem with my Switch OLED? I measured diode value and it shown as below :
RST= 1.239v
CLK= 0.763v
CMD= 0.530v
DAT0= 0.760v
SDA= 0.912v
SCL= 0.903v
anyone know the solution, pls kindly share. thank

 

[rehius]

What is the problem with my Switch OLED?

download the firmware again, there was a mistake yesterday