Hacking Hardware Picofly - a HWFLY switch modchip

[abal1000x]

People click the "important posts" and stop using old fw you might find on YouTube links.

Current issue for 2.61 is we can't boot to OFW, whether using hekate->reboot->ofw or by vol+ vol_.
But still can boot OFW via "warmboot error fix".

 

[lightninjay]

CHECK THE AIO Thread there are pinouts for everything

https://gbatemp.net/threads/picofly-aio-thread.628951/
images Mosfet

Post automatically merged: Apr 10, 2023

Have Fun Guys

i know its not the best , but for now the best i could do

View attachment 364155

In the same spirit, I vectorized your graphic. The attached is a scalable vector that can be used to make icons, large graphics, and other things without losing fidelity of the shape. Just download and remove the .pdf extension to use in your favorite photo editors.

 

[Adran_Marit]

People click the "important posts" and stop using old fw you might find on YouTube links.

Or if people linked the GitHub that has the firmware on it

 

[linuxares]

Or if people linked the GitHub that has the firmware on it

The github should really have archive for older. I hope the owner fixes that

 

[rehius]

updated to 2.62

 

[abal1000x]

Latest firmware here

ChangeLog:

v2.0 + Active MMC communication
v2.1 + Toshiba support
v2.2 + Fix Toshiba boot fail
v2.3 + SanDisk support
v2.4 + Faster Toshiba boot
v2.5 + fix OFW boot
v2.6 + software update, xiao & itsy support
v2.61 + Instinct-NX sdloader, bug fixes
v2.62 + Make 16.0.1 happy

Spoiler: LED indication

must be RED after USB write. if you see green, set "RGB mode" jumper

WHITE = eMMC write
BLUE = glitch
PURPLE = eMMC boot failure, check CMD / CLK
PINK = NS eMMC init fails, inoperative eMMC ?
YELLOW = eMMC write failure, check D0 / unsupported eMMC
CYAN = no reaction to glitch, check mosfet wire
GREEN = success

Spoiler: Diagrams by Dee87

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Spoiler: Solder example

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Spoiler: Issues, questions

Q: What is supported?
A: Erista (v1), Mariko (v2, Lite, OLED)

Q: eMMC types support?
A: Tested on Hynix, Samsung, Toshiba, SanDisk

Q: rp2040 boards support
A: WaveShare 2040-zero/one, xiao-rp2040, adafruit itsybitsy (Pi Pico is not supported for now)

Q: GREEN, but instant reset
A: Clean flux near the RST point

Q: Do I really need 47 Ohm resistors?
A: You can skip them, however in this case you will have to use emuMMC due to the line interference, sysNAND would not boot (sysNAND data can be damaged).

Q: Does the firmware has learning? How to reset statistics
A: Short pin 0 to either 1 or GND during start for chip reset. The statistics is collected each boot. The more you start it - the better it boots.

Q: open source?
A: no

Q: why you made it?
A: to prove it possible!

Q: run Atmosphere?
A: no piracy

Spoiler: Reboot to OFW / Vol+ & Vol- doesn't work, blue/black screen

v2.5 firmware had a bug with BOOT0 corruption. To recover it:
- boot "Full Stock" using hekate
- update to the latest official firmware over Wi-Fi

Spoiler: Sleep mode does not work

- boot "Full Stock" using hekate
- perform a full system reset

Spoiler: Toolbox 0.2 features

- show firmware information
- update firmware from SD card (place update.bin into the root folder)
- rollback to the backup firmware slot
- reset learning statistics
- dump / write sdloader

Spoiler: RGB LED explanation by lightninjay

if you have an rp2040-zero from waveshare/ali then it has a neopixel. It is used for diagnosing proper firmware flashes as well as console glitching. If you plug it in, and flash the uf2 firmware to it and immediately see a red light after flashing (this is not the same as flashing, then unplugging and replugging), then no rgb jumper needs to be made. If on the other hand, you get one quick green flashing light, then you need to bridge the jumper pads indicated to swap the LED colors for proper diagnoses capability.

I already remove the usb pin and flash the fw2.61.
To update fw2.62 i only need to put the update.bin to where?

Editted:
I put the update.bin on sd://update.bin then use pico toolbox, to update.
then power off, then poweron, use the pico toolbox its said v2.62 and the fuse change from 0 to 1.
Try to hekate->reboot->ofw its working.

Thank you sir.

 

[vittorio]

updated to 2.62

what changed in the latest version?

 

[abal1000x]

what changed in the latest version?

I think its fix the 'ofw boot' issue. Now its gone.

 

[Mansi]

what changed in the latest version?

v2.62 + Make 16.0.1 happy

improved support for 16.0.1?)

 

[yesmeysme]

put 2.5 on pico, boot it and then upgrade to 2.6

can you send link of 2.5 update.bin

Post automatically merged: Apr 11, 2023

have u tried backflashing the 2.5 yet

can you send me the link update.bin 2.5

 

[vittorio]

v2.62 + Make 16.0.1 happy

improved support for 16.0.1?)

I wanted to know what

 

[yesmeysme]

I got loading screen on ofw

 

[giovany86]

Hello there, with the last UF2 version, do we still have to do the unlock thing with Hekate ?

 

[juanvlc]

erista patched updated to 2.62: fixed ofw boot everything works,. Thanks!!!
Oled updated to 2.62: Blue led then red led then ofw, can´t lauch hekate anymore

 

[abal1000x]

can you send link of 2.5 update.bin

Post automatically merged: Apr 11, 2023

can you send me the link update.bin 2.5

check pm

Post automatically merged: Apr 11, 2023

Hello there, with the last UF2 version, do we still have to do the unlock thing with Hekate ?

nope

Post automatically merged: Apr 11, 2023

erista patched updated to 2.62: fixed ofw boot everything works,. Thanks!!!
Oled updated to 2.62: Blue led then red led then ofw, can´t lauch hekate anymore

Have you tried the reset statistic, maybe the statistic corrupted, for the oled?

 

[juanvlc]

check pm

Post automatically merged: Apr 11, 2023

nope

Post automatically merged: Apr 11, 2023

Have you tried the reset statistic, maybe the statistic corrupted, for the oled?

i´ve updated directly and now cant boot hekate so can´t clear stadistics.

 

[rehius]

Oled updated to 2.62: Blue led then red led then ofw, can´t lauch hekate anymore

update has a protection, it completes only on a successful boot. so just power it on again to launch the previous firmware.

oh there was one change that could bypass that

 

[handsom_tomato]

erista patched updated to 2.62: fixed ofw boot everything works,. Thanks!!!
Oled updated to 2.62: Blue led then red led then ofw, can´t lauch hekate anymore

My Switch (v2 Mariko) regular version is same state after the update.

 

[rehius]

Blue led then red led then ofw, can´t lauch hekate anymore

please try reboot from OFW. I rolled back that change in 2.63

the other thing to try is hold power for 20s in OFW to power off, then power on

 

[Modzvilleusa]

@Modzvilleusa i removed my chip and im still getting purple screen a death

Is it an Oled?
If so check that CMD resistor with a meter. Should be 4.7 ohms. If it's off than it's likely damaged and needs replacing