Hacking Hardware Picofly - a HWFLY switch modchip

Switxh · Jun 4, 2023

nico77 said:
i saw some people remove the copper tape.

removing the copper good or bad idea??
View attachment 375902

I've personally never done it exactly like that but I have cut the whole CPU part of the shield off in the past and mounted the heat pipe directly on the dye. You have to be careful though because doing the way I did there is a chance you can crack the dye or get uneven mount and personally I noticed no temperature difference so I would just do it with the copper sticker intact. That's just my input though.

Danook28 · Jun 4, 2023

sergiochendry said:
Update
I change my dat0 adapter because it suck and my emmc error
And now i got succes led
But now screen just blank
I cannot get into hekate
So how can i repair my boot0?

You try remove (desolder) cpu point 15 wier on pico and try tearn on console.
See the lcd Flex me be it is disconect or some thing of lce not conect. Or sd card exfat not have hekate files remove it . It also can get black secreen.

sergiochendry · Jun 4, 2023

Danook28 said:
You try remove cpu point 15 wier on pico and try tearn on console.

Without pico is the same
Blank screen
After that instal pico and new dat0 adapter
Got succes led but
Just blank screen to

Mr Skinner · Jun 4, 2023

Danook28 said:
1.0 uf 6.3 v ( 0201)

i got 0,85 v read in both capacitors when button power is pressed.

nico77 · Jun 4, 2023

Switxh said:
I've personally never done it exactly like that but I have cut the whole CPU part of the shield off in the past and mounted the heat pipe directly on the dye. You have to be careful though because doing the way I did there is a chance you can crack the dye or get uneven mount and personally I noticed no temperature difference so I would just do it with the copper sticker intact. That's just my input though.

yes, i wanted to know how the temperature difference.

but im gonna stick with the default without tear the copper sticker.

Switxh · Jun 4, 2023

sergiochendry said:
Without pico is the same
Blank screen
After that instal pico and new dat0 adapter
Got succes led but
Just blank screen to

Does it get to the "NO SD" screen if you remove the SD card daughter board? Unplug battery and remove that board then replug battery and try

Danook28 · Jun 4, 2023

sergiochendry said:
Without pico is the same
Blank screen
After that instal pico and new dat0 adapter
Got succes led but
Just blank screen to

See also cmd point resistor me be short.if nothing bad on soldring point that meaning your dat0 adapter under chip bridge to dat1. You must read dat0 value before you mode console brother it is so risky.

Post automatically merged: Jun 4, 2023

Mr Skinner said:
i got 0,85 v read in both capacitors when button power is pressed.

Brother must use microscope to see from where the smook is happend and why.coz you cant desolder this 2 capacitor if it still fine. It is risky if you dont know how you solder desoler capacitor very small mate.

sergiochendry · Jun 4, 2023

Switxh said:
Does it get to the "NO SD" screen if you remove the SD card daughter board? Unplug battery and remove that board then replug battery and try

still blank screen

Danook28 said:
See also cmd point resistor me be short.if nothing bad on soldring point that meaning your dat0 adapter under chip bridge to dat1. You must read dat0 value before you mode console brother it is so risky.

i think my first dat0 adapter make dat0 bridge to dat1
thats why i got error and cannot get into ofw
so add another resistor 47+47, and blank screen came
i remove pico still same
and now i change dat0 adapter and cut a little to make sure dat0 and dat1 dont bridge
dat0 value 650
led succes but blank

btw can switch with broken emmc access hekate menu?

blackpac · Jun 4, 2023

Can someone please tell me what is the 3.3v point capacitor value on the v2?

QuiTim · Jun 4, 2023

Mr Skinner said:
i got 0,85 v read in both capacitors when button power is pressed.

The thing is that if those caps are shorted/damaged the switch won't boot, but if you remove them altogether the switch works.
The easiest way is to inspect them visualy (they change color and/or explode) and do a diode test (check if you get a continuous beep)
Anyway, that might not be your problem.
Check also the resistors on CMD point (photo)

jmmc · Jun 4, 2023

One question for experienced users.

Should we use lead based tin or lead free tin? I read that lead based melts at lower temperatures.

Any advices in which tin should I use?

QuiTim · Jun 4, 2023

blackpac said:
Can someone please tell me what is the 3.3v point capacitor value on the v2?

1uf 6.3v

Danook28 · Jun 4, 2023

sergiochendry said:
still blank screen

i think my first dat0 adapter make dat0 bridge to dat1
thats why i got error and cannot get into ofw
so add another resistor 47+47, and blank screen came
i remove pico still same
and now i change dat0 adapter and cut a little to make sure dat0 and dat1 dont bridge
dat0 value 650
led succes but blank

btw can switch with broken emmc access hekate menu?

I want to see pic of hekate menu or error. You can see emmc nand info or creat emummc????

blackpac said:
Can someone please tell me what is the 3.3v point capacitor value on the v2?

If 3v3 capacitor near charge ic chip it is 1uf 6.3V 0402

QuiTim · Jun 4, 2023

jmmc said:
One question for experienced users.

Should we use lead based tin or lead free tin? I read that lead based melts at lower temperatures.

Any advices in which tin should I use?

Always use leaded solder, it makes life easier.
The best one in my experience is sn62pb36ag2 or sn63pb37.
Edit: if you are soldering as full time job, you might consider lead free (and other safety measures) since the fumes are not as toxic but otherwise using lead based should not be a problem, we inhale much more toxic crap from our surroundings every day.

sergiochendry · Jun 4, 2023

Danook28 said:
I want to see pic of hekate menu or error. You can see emmc nand info or creat emummc????

i cannot get into hekate
just blank screen

aspirins · Jun 4, 2023

Hello everyone, there is a light switch with an emmc blade, the stock does not start, the purple screen, the atmosphere does not start, I get an error Failed to initialize eMMC, Failed to start HOS
hekate gives an error failed to init emmc please tell me if there is an option to build emunand and run it with a dead emmc ?

Mr Skinner · Jun 4, 2023

QuiTim said:
The thing is that if those caps are shorted/damaged the switch won't boot, but if you remove them altogether the switch works.
The easiest way is to inspect them visualy (they change color and/or explode) and do a diode test (check if you get a continuous beep)
Anyway, that might not be your problem.
Check also the resistors on CMD point (photo)

I checked the cmd point, and got the results below in the legend. Remembering that I put the red probe (+) on the components and the black probe (-) grounded on the metal that covers the usb. diode test.

Is it hope?

POPOLO · Jun 4, 2023

QuiTim said:
你在這裡用的是哪個mosfet？

detilmalala said:
the files on the sd are the same that work fine on the v2, lite and oled that i have made. Does v1 have something different?

Post automatically merged: Jun 4, 2023

the error i get when i start cfw

Chack SD CARD Cluster 128 ~ 512 kib
Picoflu fw :2.6x ?

QuiTim · Jun 4, 2023

Mr Skinner said:
I checked the cmd point, and got the results below in the legend. Remembering that I put the red probe (+) on the components and the black probe (-) grounded on the metal that covers the usb. diode test.

Is it hope?

View attachment 375912

I think you need to replace the "no beep" one.
Can you measure it in Ohm mode to see what value it gives?

Relon · Jun 4, 2023

Mr Skinner said:
I checked the cmd point, and got the results below in the legend. Remembering that I put the red probe (+) on the components and the black probe (-) grounded on the metal that covers the usb. diode test.

Is it hope?

what's the reading in the diode mode on both sides of CMD resistor?

Hacking Hardware Picofly - a HWFLY switch modchip

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