Hacking Hardware Picofly - a HWFLY switch modchip

Takezo-San · Jun 2, 2023

Dee87 said:
Hello here I am with a Oled that has the same Problem after a hwfly install (no I did not install the hwfly) someone else did , so this has nothing to do with the picofly this is a issue that occurs during installation

User install error. Very likely too. Another variable to take into account.

Edit - Thinking about this more it could also have been a bad/defect hwfly chip or defect apu flex cable, @LogicalMadness can tell you all about that. Just too many user based + unknown variables to pin point errors and too highlight them to avoid in future installs.

abal1000x · Jun 2, 2023

_kedo_ said:
Hi, can you share a link to this particular datasheet?

Hey guys, does anybody has desoldered EMMC BGA153 and crappy OLED DAT0 cable?
Can we just flip over this EMMC chip and put this cable above to see if DAT0 on cable shorts neighbour DAT1? Is that make sense?

https://www.alldatasheet.com/datasheet-pdf/pdf/1439960/SAMSUNG/KLMCG4JETD-B041.html

Dee87 · Jun 2, 2023

Takezo-San said:
User install error. Very likely too. Another variable to take into account.

i Would account that as the only error.

i installed over 25 picoflys now in all switches with emmc types and i never had an issue.

so i can confirm the pico works on every variable of the hardware that are available if its installed correct

Nephiel · Jun 2, 2023

abal1000x said:
View attachment 375412
This is what in my mind, which i thought its more secured.

Also the left and right part might be extended like usual to secured it even more.

With more than 1-2 points, if any solder protrudes ever-so-slightly *more* than the others, neighboring points will fail. If it's slightly *less*, that point won't be reachable.

This is why a rigid adapter won't work here. Each point needs a "spring" of some kind to adapt, and at this scale there's no easy way to do that.

This is what I meant by "seesaw":

markup_73ecd027-aca1-4d74-abd8-cf0d4fe72648.jpg.png

abal1000x · Jun 2, 2023

Nephiel said:
With more than 1-2 points, if any solder protrudes ever-so-slightly *more* than the others, neighboring points will fail. If it's slightly *less*, that point won't be reachable.

This is why a rigid adapter won't work here. Each point needs a "spring" of some kind to adapt, and at this scale there's no easy way to do that.

This is what I meant by "seesaw":
View attachment 375424

Since the solder will based on the bga pad on the pcb, i think the precision is better than the flex itself.

My doubt on the precision more on the flex part than the pcb part. But again its not a problem, since its flex-ible, means we could just press it so that its in touch with the solder.

Takezo-San · Jun 2, 2023

Dee87 said:
i Would account that as the only error.

i installed over 25 picoflys now in all switches with emmc types and i never had an issue.

so i can confirm the pico works on every variable of the hardware that are available if its installed correct

Very good. You seem like a text book example of how it should be done. If you would be so kind to answer some of my questions would be a big help.

What tool do you use to pry open the apu shielding?

Do you use mini wire cutters?

Soldering iron make/model?

Flux brand?

At any point of the installation have you knocked or caused a shudder to the switch eg. Stripping wires with a yank reflex or metal shielding apu clips causing you to handle the clip mechanism more roughly?

Do you use Kapton tape near your solder joints to protect near by components?

Do you use anti static mat and or pcb holder and or anti-static wrist bands?

Solder type and mm of solder used?

Anything else that you feel might be beneficial to impart to the process for us.

Thank you in advance. I know its a lot but....I gots to know.

Danook28 · Jun 2, 2023

Slow mode in mmc if use wiers on hwfly chip lite meaning long wires and this problem happend. Or mmc problem. This is my friend console i dump boot1 boot2. prod keys. After been 20% dumping mmc raw gpp it field i dont know try another sd card. The cfw work the games install dpi and work the ofw also working.dump emummc raw gpp me be worked!!!

abal1000x · Jun 2, 2023

Nephiel said:
With more than 1-2 points, if any solder protrudes ever-so-slightly *more* than the others, neighboring points will fail. If it's slightly *less*, that point won't be reachable.

This is why a rigid adapter won't work here. Each point needs a "spring" of some kind to adapt, and at this scale there's no easy way to do that.

This is what I meant by "seesaw":
View attachment 375424

Try to blend the image with the 3 point adapter.

And when the hole 'split up' when we push, it will expand to the neighbour and short circuit it.
That is why i cut the half on the Dat1 part, and remove the possibility it got short circuited.

HackMan37 · Jun 2, 2023

Adran_Marit said:
i wonder what point @HackMan37 used and if they could swap points?

I use the provided by the guide 6.1.

I can try to swap later.

CheHauleong · Jun 2, 2023

Hi, I’m new to this modding, was installing rp2040 on a switch lite and accidentally lifted the dat0 point. Want to ask is there any alternate point to solder to? Thanks

abal1000x · Jun 2, 2023

CheHauleong said:
Hi, I’m new to nsw modding. Was doing the pico fly install then I accidentally lifted the pad on dat0 point, is there any other alternate point to solder to?

What device?

This is lite

themine1500 · Jun 2, 2023

hothotramen said:
Anybody tried this? Seems to have replaced Instinct chips. Claims to be RP2040 based.

Mr Skinner said:
I realized I bought 30 pcs of these damn crappy dat0 cables. Currently I have the Black screen and error *=* No eMMC block 0 read (eMMC init failure?). My diode reading for dat0 is 687, hynx chip.
View attachment 375406

Is it possible that the short caused by these cables could kill the EMMC? Is there anything I can do to test my Switch and verify the extent of the damage?

I tried using 2 of these. Both on the same device. Same results. Black screen.. removed it all device still works file. Hopefully yours is fine as well. Throw them away they suck. I’m trying to get return of funds on mine currently.

CodyRoseman · Jun 2, 2023

I made a quick flex for you guys if you want to test it, im too poor to order more stuff right now haha

Just cut the pad to shape and it should work fine

I've also upload the inkscape svg project

https://drive.google.com/drive/folders/16NoeSxHGKhYybqo3mvYJMKWbEcry6g_L?usp=sharing

SQc04 · Jun 2, 2023

hothotramen said:
Anybody tried this? Seems to have replaced Instinct chips. Claims to be RP2040 based.

These messages say that they are unusable and will cause boot0 problems

deeps · Jun 2, 2023

I have a strange behavior with an OLED i just did.

Directly on first boot (and after a chip reset), the chip goes "=** eMMC init failure during glitch process" error and then boots OFW (which works fine)
a few more boot attempts, same error and still boots ofw.
A few more attempts, and the chip somehow figures out the right timing and boots hekate.
after that, it keeps succeeding and booting hekate quickly everytime.
When running emmc benchmark in hekate, the speeds are a bit slower than usual (160 MB/s) but it doesn't seem to go into slow mode. No warning about it.
If i reset the chip, the cycle restarts. a few unintentional ofw boots and then it's fine again.

I've used the green adapter and therefore detached the emmc. I'm thinking the emmc connection to one of the DAT points might be bad? But still it works just fine and OFW works fine. I'm confused. Ideas?

Nephiel · Jun 2, 2023

abal1000x said:
Since the solder will based on the bga pad on the pcb, i think the precision is better than the flex itself.

My doubt on the precision more on the flex part than the pcb part. But again its not a problem, since its flex-ible, means we could just press it so that its in touch with the solder.

View attachment 375425

Maybe... it depends on the flex having enough give. I don't think it can flex too much in the same plane.

It's just like how a 3-legged stool can never wobble, while those with 4 or more legs will.

SQc04 · Jun 2, 2023

CodyRoseman said:
I made a quick flex for you guys if you want to test it, im too poor to order more stuff right now haha

Just cut the pad to shape and it should work fine

I've also upload the inkscape svg project

https://drive.google.com/drive/folders/16NoeSxHGKhYybqo3mvYJMKWbEcry6g_L?usp=sharing

View attachment 375445

Maybe it can be so?

ypeeLs · Jun 2, 2023

Takezo-San said:
Very good. You seem like a text book example of how it should be done. If you would be so kind to answer some of my questions would be a big help.

What tool do you use to pry open the apu shielding?

Do you use mini wire cutters?

Soldering iron make/model?

Flux brand?

At any point of the installation have you knocked or caused a shudder to the switch eg. Stripping wires with a yank reflex or metal shielding apu clips causing you to handle the clip mechanism more roughly?

Do you use Kapton tape near your solder joints to protect near by components?

Do you use anti static mat and or pcb holder and or anti-static wrist bands?

Solder type and mm of solder used?

Anything else that you feel might be beneficial to impart to the process for us.

Thank you in advance. I know its a lot but....I gots to know.

1. Sewing needles
2. Hakko CHP170
3. Aixun T3A with 1.5mm chisel tip
4. Amtech NC-559-V3-TF
5. Not sure what you mean, but I have slipped with the needles while removing the shield and stabbed the motherboard
6. Iron should never touch the board long enough to transfer heat to other components
7. PCB Holder and Anti Static mat
8. Kester 63/37 0.40" (1mm)

snaker · Jun 2, 2023

Ok guys. Who remembers old school RGH on xbox 360 to get the cpu keys. Do you remember the CPU Postfix Adapter? I think that this is what we need! Look at my pics.If someone could make an adapter like this it would be absolutely stable and work 100% fine.The cpu pin that you can see at the photo has a spring and the needle pin is pushed with tension from the spring. I used it a lot at good old days of xbox 360 era to get the cpu keys and flash the dvd drives with custom firmwares. This is the real deal.

QuiTim · Jun 2, 2023

snaker said:
Ok guys. Who remembers old school RGH on xbox 360 to get the cpu keys. Do you remember the CPU Postfix Adapter? I think that this is what we need! Look at my pics.If someone could make an adapter like this it would be absolutely stable and work 100% fine.The cpu pin that you can see at the photo has a spring and the needle pin is pushed with tension from the spring. I used it a lot at back old days of xbox 360 era to get the cpu keys and flash the dvd drives with custom firmwares. This is the real deal.

Hahahaha i spent the last couple of hours trying to see if this can be done. I guess we both had flashbacks from good old days

After looking through the specs of the possible materials I think that a small production is not viable.
I did find the test probe/pin that might do the job seeing as the clearance between bga and pcb is around 0.2mm
The other part should be fairly easy. Lets see what other people think

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