Hacking Hardware Picofly - a HWFLY switch modchip

[nico77]

Use the official 2.67 firmware if the installation is done correctly there is no need for 2.7 which is in alpha stage.
If you encounter any issue and not found any problem in the installation and everything looks good but still not showing NOSD. Then your best try will be a 2.7 to see what error it will give.

awright
thx

hope mine gonna work well

 

[RiotRetroGaming]

take the kapton off like @lightninjay said then u will have cyan
shorten thos mosfet to apu cap wires and the issue will probally be solved, if that doesnt solve it check mosfet to cpu pin wire

Ahhh I've given up. Ordered some flex cables..... nothing seemed to work and can't see how bigger cables can get soldered on without shorting.

 

[Dee87]

Ahhh I've given up. Ordered some flex cables..... nothing seemed to work and can't see how bigger cables can get soldered on without shorting.

u need atleast 0.2mm wire for apu caps to mosfet and they should be as short as possible

 

[tsukimaru]

Guys I made a flawless installation today with a V2 using mostly wiring on the eMMC chip but I got a BSOD for no apparent reason. I made sure I didn't keep the soldering iron close to sensitive parts for too long and this is the first in a couple of weeks that occur like this. The only different thing I did was use a single mosfet install instead of dual as I usually do. Has anyone had this happen?

 

[LogicalMadness]

Hmm, custom CAD\print a backplate w\ attached e-ink display? Since it's only connected to the RP2040 though, display what? FW version and our beloved Hekate background?

https://www.adafruit.com/product/5727

Post automatically merged: May 17, 2023

Guys I made a flawless installation today with a V2 using mostly wiring on the eMMC chip but I got a BSOD for no apparent reason. I made sure I didn't keep the soldering iron close to sensitive parts for too long and this is the first in a couple of weeks that occur like this. The only different thing I did was use a single mosfet install instead of dual as I usually do. Has anyone had this happen?

Can't wait to see pics of this "flawless" install... @lightninjay XD

 

[jv_233]

Hmm, custom CAD\print a backplate w\ attached e-ink display? Since it's only connected to the RP2040 though, display what? FW version and our beloved Hekate background?

https://www.adafruit.com/product/5727

Post automatically merged: May 17, 2023

Can't wait to see pics of this "flawless" install... @lightninjay XDi

Hmm, custom CAD\print a backplate w\ attached e-ink display? Since it's only connected to the RP2040 though, display what? FW version and our beloved Hekate background?

https://www.adafruit.com/product/5727

Post automatically merged: May 17, 2023

Can't wait to see pics of this "flawless" install... @lightninjay XD

Isn’t that an oxymoron? It’s like saying “I built a flawless door, but it can’t open”

 

[lightninjay]

Hmm, custom CAD\print a backplate w\ attached e-ink display? Since it's only connected to the RP2040 though, display what? FW version and our beloved Hekate background?

https://www.adafruit.com/product/5727

Post automatically merged: May 17, 2023

Can't wait to see pics of this "flawless" install... @lightninjay XD

I swear I'm not scripting the universe...

 

[redmagejosh]

Hi, I was wondering if this RP2040 would work to do picofly? https://www.aliexpress.com/item/1005005301582025.html

 

[Dee87]

Guys I made a flawless installation today with a V2 using mostly wiring on the eMMC chip but I got a BSOD for no apparent reason. I made sure I didn't keep the soldering iron close to sensitive parts for too long and this is the first in a couple of weeks that occur like this. The only different thing I did was use a single mosfet install instead of dual as I usually do. Has anyone had this happen?

well apparently it isnt that flawless otherwise u wouldnt have problems ;-)
ilets see pics of the install

Post automatically merged: May 17, 2023

Hi, I was wondering if this RP2040 would work to do picofly? https://www.aliexpress.com/item/1005005301582025.html

read the thread and u will see if it works
maybe also the aio thread has some information for u

 

[tsukimaru]

well apparently it isnt that flawless otherwise u wouldnt have problems ;-)
ilets see pics of the install

Post automatically merged: May 17, 2023

read the thread and u will see if it works
maybe also the aio thread has some information for u

I uninstalled it in order to see if the behavior would reverse but no dice. I'll show pics of everything once I get back home, but I find it baffling that it did that. It's the only one that has ever behaved like this ever since I use the eMMC for most of my solder points

Post automatically merged: May 17, 2023

Plus, I made the same installation as two other switches that I made yesterday. Those worked with no problems at all, the only difference is that I attempted a single mosfet installation with this one

 

[rr8400]

Hi. I bought an Lexar SD card and my Switch Lite does not recognize it. My V1 and OLED both recognize but the lite doesn't. Is this something to do with the modchip? (And yes, it does reads my SanDisk SD so I have no clue of what the problem could be).

 

[tsukimaru]

Hmm, custom CAD\print a backplate w\ attached e-ink display? Since it's only connected to the RP2040 though, display what? FW version and our beloved Hekate background?

https://www.adafruit.com/product/5727

Post automatically merged: May 17, 2023

Can't wait to see pics of this "flawless" install... @lightninjay XD

Be the judge, here.

I indeed took very good care and confirmed that I made my solder points correctly. I removed the mosfet installation from the CPU thinking that would reverse BSOD but as previously stated, no dice.

Any useful advice instead of just snarky sarcasm?

Post automatically merged: May 18, 2023

I missed the top side of the emmc, here

 

[lightninjay]

Be the judge, here.

I indeed took very good care and confirmed that I made my solder points correctly. I removed the mosfet installation from the CPU thinking that would reverse BSOD but as previously stated, no dice.

Any useful advice instead of just snarky sarcasm?

Post automatically merged: May 18, 2023

I missed the top side of the emmc, here

I will admit I am a bit suspicious of the removed mosfet installation (even with as clean as the caps are after removal). Many BSOD (specifically the Blue screen) reasons are centered around a APU issue (motherboard bending and separating APU pins and other more horrible sounding things). If you somehow managed to overvolt your APU and somehow shocked/fried your APU with a miswired mosfet install, then perhaps you fried your APU?

 

[FreeLander]

Hello. I thought I did something wrong when I got a blue screen after installing Picofly on a Lite. The caps behind the APU got shorted even though I was extra careful.

Upon further inspection, I remembered that I checked the MOSFET with a continuity test before installing it and I noticed that it gave a beep with S and all D points. Maybe the MOSFET was already defective and that caused the blue screen?

 

[abal1000x]

Hello. I thought I did something wrong when I got a blue screen after installing Picofly on a Lite. The caps behind the APU got shorted even though I was extra careful.

Upon further inspection, I remembered that I checked the MOSFET with a continuity test before installing it and I noticed that it gave a beep with S and all D points. Maybe the MOSFET was already defective and that caused the blue screen?

I also beep. I dont use continuity test, but use ohm. Its around 12 ohms (not 0-2 ohms). In my multimeter 0-2 ohms means connected.

 

[Adran_Marit]

I'm away for a bit from work and things explode again. Typical, now to get a rundown of the i2c sda scl stuff

 

[bilalhassan341]

Hi. I bought an Lexar SD card and my Switch Lite does not recognize it. My V1 and OLED both recognize but the lite doesn't. Is this something to do with the modchip? (And yes, it does reads my SanDisk SD so I have no clue of what the problem could be).

Does your switch lite has picofly install?

 

[AntonIX]

A bit of new features in the test version 2.70

- now it's only 3 colours: blue (glitching), white (flashing), yellow (error code). This was made to make possible pi pico debugging + get rid of RGB/GRB issues
Error codes list (= is long pulse, * is short pulse):

= USB flashing done

** RST is not connected
*= CMD is not connected
=* D0 is not connected
== CLK is not connected

=** eMMC init failure during glitch process
=*= CPU never reach BCT check, should not happen
==* CPU always reach BCT check (no glitch reaction, check mosfet)
=== Glitch attempt limit reached, cannot glitch

=*** eMMC init failure
=**= eMMC write failure - comparison failed
=*=* eMMC write failure - write failed
=*== eMMC test failure - read failed
==** eMMC read failed during firmware update
==*= BCT copy failed - write failure
===* BCT copy failed - comparison failure
==== BCT copy failed - read failure

The second major feature is CPU downvoltage. This might be useful when your MOSFET (or the wire) is not strong enough for the glitch. (do you remember the case where you press "RESET" on the rp2040 when joycon logo appears to make it working? that's it, system lowers CPU voltage)
Therefore you can solder two additional wires to the chip so it could lower the CPU voltage making the glitch easier. This is optional! only if you really need.

Waveshare rp2040: SDA=12, SCL=13
Pi Pico: SDA = 19, SCL = 20
XIAO 2040: SDA=3, SCL=4
ItayBitsy 2040: SDA = 18, SCL = 19

pinout for Mariko v2 board:
View attachment 371698

I have pinouts for Lite & OLED, but haven't tested it yet. You can easily track the i2c wires by yourself using board views here http://balika011.hu/switch/ (OLED here)

The firmware is in alpha stage, so use at your own risk

Is there any SDA and SCL points on erista? Can solder it to get better glitch result?

 

[bilalhassan341]

Hello. I thought I did something wrong when I got a blue screen after installing Picofly on a Lite. The caps behind the APU got shorted even though I was extra careful.

Upon further inspection, I remembered that I checked the MOSFET with a continuity test before installing it and I noticed that it gave a beep with S and all D points. Maybe the MOSFET was already defective and that caused the blue screen?

It happens sometimes when you accidently touch the gate point on the mosfet. After that Drain and source point will start giving continuity as the mosfet gate is triggered but it is a no issue. I tested this issue on 5 mosfet At first all 5 didnt give the continuity and when I touch the gate point with probe and second probe to drain or source the mosfet gate triggered all gives the continuity. I installed the same continuity mosfet and there is no issue with the glitch. For mind peace you can install the new on but don't touch on the gate point with probe.

As @abal1000x said use ohm to test.

 

[FreeLander]

Thanks all, but this is really frustrating. I got another lite and I ended up with the same issue. After installing it it did give green light and no sd card logo. When I installed an SD card with hekate, black screen. I turned it off removed SD card and booted again. Blue screen. I removed all wires and it still on blue screen.

Very frustrating. I followed the diagram by the inch and made sure all readings are fine. Why am I getting the no SD card logo but everything went sideways when I install an SD card. The same exact issue on two Lites.