Hacking Hardware Picofly - a HWFLY switch modchip

[Danook28]

View attachment 375961

These capacitors follow the same rule?

Sp1 capacitor and sp2 capacitor value left 11.1 ohm or 10.1 ohm. And from right is 0.1 ohm. The sp1 is from right is 11.1 ohm or 10.1 ohm and from left is 0.1 ohm. Use multimater. The value can up 12.1 ohm to 16. 1 to 18.1 ohm. I read value from v1 and v2 and oled.
And after add Flex Cable. (Is same) .
Diode mod beep from left and right and the it is beeping from both side (console working)

 

[sergiochendry]

Theres no solution so far.
Someone saying succeed solve it by restore the nand content from backup.

My current analysis is the nand data corrupted, because of improper CMD/CLK/D0 used.
The problem is how to restore it, since its usually before even goes to hekate to backup the nand.

Try use ums-loader, does it work? Try to backup the emmc using pc, does it work?

how can i try ums loader without hekate?

 

[abal1000x]

.

 

[sergiochendry]

picofly will run sdcard://payload.bin after glitch.

You could put any payload in there, hekate just one of it.

oh you mean like memloader.bin?

 

[abal1000x]

.

 

[sergiochendry]

rename ums-loader.bin into payload.bin in root sdcard

still same
black screen
is there any solution?

 

[abal1000x]

.

 

[sergiochendry]

The glitch ok, payload.bin in microsd, but still blackscreen?

yes, glitch ok
i already place payload.bin in micro sd
download from here
https://github.com/lulle2007200/ums-loader
rename to payload.bin
still blackscreen

 

[abal1000x]

.

 

[sergiochendry]

Logically its not a corrupted nand content.

I think its more probable the ram is malfunction.
Since ums-load use only iram.

You might check the connection between the ram and the cpu maybe theres some resistor burned.
Or you could check the supplied voltage to the ram, maybe the voltage is not being supplied.
If the voltage in problem, you might track it, which ic supplied the voltage. Maybe some resistor burned.

Post automatically merged: Jun 5, 2023

Before the glitch happened, theres a write to emmc, and read from emmc.
So we could assume the nand is okay hardware perspective.

I assume the next step is, the cpu will fetch the machine code from the emmc to the ram, then run it.
The bootloader (BCT) in the emmc is modified, and it will run the payload.bin (which is loaded to the ram).

So the most probable scenario is theres problem on ram.

Btw i remember
I ripped of some resistor while try to open cpu shield using my nail
I solder back again
the left resistor
Is that resistor burned?

 

[abal1000x]

.

 

[sergiochendry]

Seems not.

Tracing using https://balika011.hu/switch/oled/ That resistor seems goes to supply voltage to the emmc.
Since the glitch worked, i think its okay.

i remember after i add more resistor 47+47
black screen happen
before that, picofly logo show but cannot enter ofw
you think add more resistor can make ram failed
just wonder

 

[Adran_Marit]

If it doesn't exist, then it will never be any issue (I copied the LED code data directly from Rehius' post, so if he still includes it, then so will I)

this tbh

 

[abal1000x]

.

 

[bilalhassan341]

Finally Saved my Blue Screen switch. First I Reflow the Apu the blue screen gone and then black screen comes. Checked the whole board shorts and everything and didn't find any shorts. Then, I tried to install the picofly and switch showed the No SD Logo. Put the hekate into sd card. Restore the the boot 0 and 1 using Sthetix guide for level 1 unbricking. Switch boots to home page after reboot to OFW.

 

[sergiochendry]

Hello, i bought new switch oled and get toshiba nand
when i press the power on
Picofly logo show normaly, when i press volume -+ to get OFW, just show blackscreen
I unplug battery and plug in back, i got error ** (RST)
I change RST cable and now got =**
Picofly logo show again and cannot get into OFW
Just blakscreen again

So i add more resistor cause i think toshiba need more resistor (47+47)
And now got =***

this is my first post about my switch oled problem
after i remove pico
i got nintendo logo and switch logo, but never get into menu
restart switch and get black screen
i realize my dat0 adapter suck so i change the good one
and i got succes led light

It should not.

I think i misunderstand something.
I assume when you say the glitched work, the picofly logo shows.
So how you know the glitch already work?

i know glitch work by see led light

 

[fox87]

1.0 uf 6.3 v ( 0201)

What Software is that @Danook28 ?

 

[abal1000x]

.

 

[bilalhassan341]

What is the other point of D0 on switch lite?

 

[abal1000x]

.