Hacking Hardware Picofly - a HWFLY switch modchip

[twins333]

Thank you for your answer. I put the update.bin file in the root directory, and then successfully updated to version 2.8 using the PicoFly Toolbox. In Picofly Toolbox there is the possibility to update the SD Loader. Do I have to update the SD Loader too?

no need to update the sdloader manually, it gets updated automatically with the firmware update you just finished. manual sdloader updates are only required if there is a breaking change with the full firmware update package and the update process cannot flash both the sdloader and the firmware at the same time. source: https://guide.nx-modchip.info/extras/alternate_flashing/#information

 

[mike130504]

hello , i have to mod a couple of oleds. Which modchip always works from ali? i tried the one with the both connectors on top but gave me issues on a model with hynix emmc. Thanks guys

 

[thesjaakspoiler]

hello , i have to mod a couple of oleds. Which modchip always works from ali? i tried the one with the both connectors on top but gave me issues on a model with hynix emmc. Thanks guys

Hynix emmc always need some extra attention,
I hear from other installers that they use the Hwfly instead of the Picofly because sometimes they can't get it to work, even with extra resistors.
I don't seem to get Hynix emmcs here so maybe they were only shipped to a particular region.

 

[mike130504]

Hynix emmc always need some extra attention,
I hear from other installers that they use the Hwfly instead of the Picofly because sometimes they can't get it to work, even with extra resistors.
I don't seem to get Hynix emmcs here so maybe they were only shipped to a particular region.

i got one from hong kong switches. Thanks for the reply btw . Also do you know where i can find those instinct nx boards? Ali doesn't sell them anymore

 

[thesjaakspoiler]

i got one from hong kong switches. Thanks for the reply btw . Also do you know where i can find those instinct nx boards? Ali doesn't sell them anymore

Ali has been cracking down on instinct and hwfly modchip so I don't see them anymore either.
Ali only has RP2040 based modchips nowadays.
Some other Chinese markets still do have them but it is hard to tell whether such websites are legit or not.

 

[LuigiGad]

Hynix emmc always need some extra attention,
I hear from other installers that they use the Hwfly instead of the Picofly because sometimes they can't get it to work, even with extra resistors.
I don't seem to get Hynix emmcs here so maybe they were only shipped to a particular region.

In my experience, after having worked with many OLEDs, I can share my opinion. All were done successfully and always in the same way, rp2040-zero, and all with only 47 ohms for dat0/cmd/clk. They all start up without major problems.

 

[thesjaakspoiler]

In my experience, after having worked with many OLEDs, I can share my opinion. All were done successfully and always in the same way, rp2040-zero, and all with only 47 ohms for dat0/cmd/clk. They all start up without major problems.

Thanks for sharing your experience!

 

[mike130504]

In my experience, after having worked with many OLEDs, I can share my opinion. All were done successfully and always in the same way, rp2040-zero, and all with only 47 ohms for dat0/cmd/clk. They all start up without major problems.

they boot into ofw no problem?

 

[LuigiGad]

they boot into ofw no problem?

of course yes, otherwise the installation did not go well

 

[linkref]

I kind of failed my kamikaze, still have readings on the red point, but now switch boot pink screen.
I've replaced the CMD resistor, but still pink screen, (cmd has 4,6K reading)

What can I do ?

Thanks

 

[thesjaakspoiler]

I kind of failed my kamikaze, still have readings on the red point, but now switch boot pink screen.
I've replaced the CMD resistor, but still pink screen, (cmd has 4,6K reading)

What can I do ?

Thanks
View attachment 522221

If you burned up your cmd resistor (4k7 ohm) by applying too much heat, you might get a pink screen.
A more horrifying cause is a corrupted emmc boot0 partition.
But let's stay positive and assume it is your cmd resistor.

 

[DarkXur]

Hello guys. I bought the chip online, it had some pretty good reviews. I soldered it to my switch lite and it WORKS. The issues is that console started to discharge rapidly during standby mode (like 2% every hour). When the console is completely off it doesn't discharge so that's good. When it comes to booting to original fw, it discharges too, so I presume that the issues is hardware base. One thing I did differently is that I used different source of voltage (shown on screenshot), original one I screwed up (desoldered capacitor, needed to find new one, soldered one again - fixed) and I didn't want to struggle with it again. I don't know the fw of the mod chip, I just installed it . Is updating an option, or using diffrent current source caused the issue? Thanks in advance for reply!

 

[thesjaakspoiler]

Is updating an option, or using diffrent current source caused the issue?

2% is a bit much as the RP2040 uses about 24mA on average but maybe your battery has already aged a bit.

After glitching, the picofly basically does not do anything anymore
Still it will use some power because it has no option to power itself down.

So maybe the 'alternative' voltage point might be causing some side effect.
Some power rails get powered down in the standby mode and some other don't .
It looks like the point you are using is also used by the Wifi/BT module so maybe that might be active in standby mode in order to wake up the Switch through the joycons.

 

[DarkXur]

Some power rails get powered down in the standby mode and some other don't .

Thank you for the answer! Do you know which power rail is turned off during stand by then? I will desolder the power cable and see if it works?

 

[Nephiel]

Thank you for the answer! Do you know which power rail is turned off during stand by then? I will desolder the power cable and see if it works?

Which firmware version? Check first if it also drains in standby with airplane mode on. If it doesn't, it might be a known software issue.

 

[DarkXur]

Which firmware version? Check first if it also drains in standby with airplane mode on. If it doesn't, it might be a known software issue.

I have 20.0.1|AMS1.9.0|E and it is draining even in airplane mode unfortunately

 

[Nephiel]

I have 20.0.1|AMS1.9.0|E and it is draining even in airplane mode unfortunately

Looks like hardware issue then. Could it be the battery is old and worn?

 

[Nick0323]

Hello guys. I have this nintendo switch lite and it has a blue screen problem and by checking the board I noticed two missing resistors near the ram of the switch I want to know the value or what type is so that I can maybe solder a new one to see If maybe that fix problem. I would really apreciate if someone could tell me.

 

[jkyoho]

Hello guys. I have this nintendo switch lite and it has a blue screen problem and by checking the board I noticed two missing resistors near the ram of the switch I want to know the value or what type is so that I can maybe solder a new one to see If maybe that fix problem. I would really apreciate if someone could tell me.View attachment 524067

You should check if ant traces been cut in red circle instead of looking for capacitors.

 

[Nick0323]

You should check if ant traces been cut in red circle instead of looking for capacitors.
View attachment 524076

I checked and it seems fine at first glance I need to know the value of those capacitor