Hacking Hardware Picofly - a HWFLY switch modchip

[bilalhassan341]

I think Bilal ment best wire/alloy for soldering. I would say sn62pb36ag2 but sn63pb37 is very good as well.
If your joints still look dry after using flux I would suggest changing flux type

Oh yeah that might be true Xd I use low melt solder for everything on switches wichone exactly I'm not sure, but flux is not flux there are huge defferents there

So, its time to change to low melting solder and a nice flux.


Edit: one more thing, does S-Lite has more points for clk and cmd. Because Dat0 has two points one under the heat copper pipe.

Post automatically merged: Jun 24, 2023

second try

Nice. one thing I noticed when I did the lite is that if you done the lite mod you can easily do the v1 or v2.

 

[abal1000x]

I usually don't use lowmelt around cap inside cpu shield.
Just for precaution, if the heat from cpu is enough to melt the solder.

 

[Dee87]

I usually don't use lowmelt around cap inside cpu shield.
Just for precaution, if the heat from cpu is enough to melt the solder.

I mean if the apu gets to 150c its gonna be gone anyways

 

[bilalhassan341]

I usually don't use lowmelt around cap inside cpu shield.
Just for precaution, if the heat from cpu is enough to melt the solder.

If this happens then switch plastic and cpu are already gone.

 

[abal1000x]

I measure sxcore resistor on CMD CLK and Dat0
On CMD 0 ohms, on CLK and CMD 240Ohms.

The sxcore working prefectly. I doubt with the 0 ohms on CMD, maybe its broken, and the sxcore still wroking
If someone have sxcore board, please help me measure the resistor, to confirm this.

 

[Menacer]

Hi,
I successfully installed picofly on a lite, getting the "no sd card" screen.
I prepared the SD card with sdsetup.com.
When I try to launch atmosphere, I get the error "unknown pkg1 version".
I tried to google it but couldn't make sense of it. Seems like the general solution is to update to latest versions of atmosphere, but I have the latest version.
Also, when I try to reboot into OFW, I get a black screen.
Am I doing something wrong?

 

[Alex_p]

Hi,
I successfully installed picofly on a lite, getting the "no sd card" screen.
I prepared the SD card with sdsetup.com.
When I try to launch atmosphere, I get the error "unknown pkg1 version".
I tried to google it but couldn't make sense of it.
Also, when I try to reboot into OFW, I get a black screen.
Am I doing something wrong?

SDsetup isn't quite up to date. DL CTCaer/hekate from github and make sure you're using the latest payload, not fusee that came from SDsetup

 

[cgtchy0412]

Yes, first custom firmware build, set oc to 250mhz, also change sleep wait to 1000ms. All in main.c file.

 

[bilalhassan341]

does the usb c port on the switch lite can be used as a ground for the pico?...

 

[linuxares]

does the usb c port on the switch lite can be used as a ground for the pico?...

Don't solder directly on to it but one of the grounding pins (The big ones that holds down the port to the PCB)

 

[Menacer]

SDsetup isn't quite up to date. DL CTCaer/hekate from github and make sure you're using the hekate payload, not fusee that came from SDsetup

Will try. But I didn't update the switch for quite a long time, so I'm not sure this will solve the problem.

 

[rehius]

Yes, first custom firmware build, set oc to 250mhz, also change sleep wait to 1000ms. All in main.c file.

View attachment 379663

You also have to adjust
OFFSET_MIN / OFFSET_MAX accordingly when changing the main clock

 

[cgtchy0412]

T

You also have to adjust
OFFSET_MIN / OFFSET_MAX accordingly when changing the main clock

Thanks.
But im sorry, let me understand that part first. hihi.
Can you help to explain on the logic in the code on how to find best offset/weight.
Just maybe the sporadic glitch time after training can be caused by cannot find the best offset record. Or is it just that every glitch is unique so every once in a while old offset cannot work again.

 

[Menacer]

SDsetup isn't quite up to date. DL CTCaer/hekate from github and make sure you're using the latest payload, not fusee that came from SDsetup

I updated to latest hekate 6.0.5 and still get the same error :/

 

[deeps]

I updated to latest hekate 6.0.5 and still get the same error :/

if you get black screen when booting ofw then the software on the sd card is not the problem. I would try adding stronger resistance on dat0/cmd. I normally use 100 ohms each to avoid ofw issues.

 

[Menacer]

if you get black screen when booting ofw then the software on the sd card is not the problem. I would try adding stronger resistance on dat0/cmd. I normally use 100 ohms each to avoid ofw issues.

Thanks for the tip. I installed a hwfly style board with flex cables, so it's kind of hard for me to do that.
I unplugged the chip, and booting was fine. I was on 16.0.1 (much newer than I thought) and updated to latest 16.0.3 but I still have the same issues.

Would it be possible that this phenomenon could be caused by bad soldering joints on the SoC caps? I thought these were where the glitching takes place. So when I saw this was successful, I figured it'd be fine.

 

[Jafece]

If you are making it into hekate then the chip is fine. Your issue lies in software on your sd card. You should delete everything on the card minus the payload.bin file, and then put plain atmosphere and hekate on the card. If that boots then you can start figuring out what was missing from the pack you downloaded.

 

[frozenboy]

Hi,
I successfully installed picofly on a lite, getting the "no sd card" screen.
I prepared the SD card with sdsetup.com.
When I try to launch atmosphere, I get the error "unknown pkg1 version".
I tried to google it but couldn't make sense of it. Seems like the general solution is to update to latest versions of atmosphere, but I have the latest version.
Also, when I try to reboot into OFW, I get a black screen.
Am I doing something wrong?

If you got black screen, then check slow mmc mode benchmark to see if it is the case,if it does, add more resistor

 

[Menacer]

If you are making it into hekate then the chip is fine. Your issue lies in software on your sd card. You should delete everything on the card minus the payload.bin file, and then put plain atmosphere and hekate on the card. If that boots then you can start figuring out what was missing from the pack you downloaded.

Hekate boots up fine. I literally did the plain atmos/hekate thing.
For reference what I did from empty SD card:
* Extract atmosphere-1.5.4-master-3cb54e2b4+hbl-2.4.3+hbmenu-3.5.1.zip to root of SD
* Extract bootloader folder of hekate_ctcaer_6.0.5_Nyx_1.5.4_v2.zip to root of SD card
* Copy hekate_ipl.ini to bootloader folder

I know PicoFlyGuideV.6.2 mentions a payload.bin to be put in root of SD card. I did not have that, but I just renamed hekate_ctcaer_6.0.5.bin to payload.bin and put it to the root of the SD card. No change.

 

[lightninjay]

Hekate boots up fine. I literally did the plain atmos/hekate thing.
For reference what I did from empty SD card:
* Extract atmosphere-1.5.4-master-3cb54e2b4+hbl-2.4.3+hbmenu-3.5.1.zip to root of SD
* Extract bootloader folder of hekate_ctcaer_6.0.5_Nyx_1.5.4_v2.zip to root of SD card
* Copy hekate_ipl.ini to bootloader folder

I know PicoFlyGuideV.6.2 mentions a payload.bin to be put in root of SD card. I did not have that, but I just renamed hekate_ctcaer_6.0.5.bin to payload.bin and put it to the root of the SD card. No change.

That is precisely what is implied, and many HATS guides will instruct you to do this.