Tutorial  Updated

Internal modchip - SAMD21 (Trinket M0, Gemma M0, ItsyBitsy M0 Express) Guide, Files & Support

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Its amazing that people are still checking all of this out. I thank you for all of the help and support I have received in this thread over this year.

Cheers. Matty.


A video showing a modchip in action. Thank you once again to @metaljay for providing this. This is what you can achieve by fitting a chip!



Section 1. Gather your software.

Get your chip software from THIS THREAD.
Follow the flashing instructions there...




Section 2. Removing USB port and unneeded LEDs. (Adafruit chips only)
  • Next, we need to remove the USB port from the modchip. I recommend a heatgun or a rework station. Heat up until the USB port just lifts off the modchip.
  • Do the same for the LED just to the right of the USB port.
See picture:
20181031_110415.jpg


You are now ready to fit your device. Proceed to Fitting section.





Section 3. Fitting modchip to your Switch.
New Universal Method. All SAMD-based internal chips. If your chip is not supported and you cannot work it out, PM me.

Trinket M0.
Solder as laid out in the following picture

trinketfinal.jpg

==================================================
Rebug SwitchME M0. Use Trinket files.
Solder as laid out in the following picture

rebugfinal.jpg

==================================================
RCMX86 - Internal modchip version.
Solder as laid out in the following picture

RCMX86-Internal-Final.jpg


==================================================
Gemma M0. Use Gemma files.
Solder as laid out in the following picture


gemma final.jpg

==================================================
ItsyBitsy M0 Express. Use ItsyBitsy files.
Solder as laid out in the following picture

itsybitsyfinal.jpg




==================================================
Feather M0 Express. Use Feather files.
Solder as laid out in the following picture

feather_final.jpg




BUILD YOUR OWN FROM A QFP ATSAMD21E18. Trinket equivalent pins.
Flash Trinket bootloader using OpenOCD via serial pins SWDIO / SWDCLK. Fit a reset switch somewhere... Or going to power / wake (aka method 2). If building for external use, it is good practice to fit a third capacitor between 3V & GND. This is deliberately vague and ambigious, as this needs research and you need to know what you are doing.

Link for setting the Pi up with OpenOCD: HERE
Raspberry Pi OpenOCD image in downloads section or HERE
SAMD pi connection.png



Alternative Solder Points

Credit to @consolex for original pic. I`ve added alternative points to solder to:
Alternatepoints.jpg


Credit to @pyorin for this much tidier version showing the same info as the above one!
Alternatepoints2.jpg

s-l1600.jpg

alternative3v.jpg




Replacement Parts List

Ok... So you have damaged your switch soldering your chip in. Not to worry.

First things first, DO NOT BRIDGE THE CONTACTS HOPING TO REVIVE YOUR SWITCH. With resistors, you may possibly get away with this, but with the capacitors listed below, if you jump these points, you will make a nice short-circuit to the PMIC and / or the M92T36, killing them instantly. Don`t do it.

OK... I`ll list these parts with METHOD 2 & 3 TRINKET PIN NUMBERS and the values of the components they solder to.

TRINKET 3V (POWER SUPPLY) - 2.2uF 0402 size MLCC capacitor. Voltage unimportant as long as it is over 6.3v
TRINKET PIN 2 (POWER ON RESET - goes to pin 5 on M92T36)- 4.7uF 0402 size MLCC capacitor. Voltage unimportant as long as it is over 6.3v
TRINKET PIN 0 (VOL+) - 150R (150 ohms) 0201 Thick Film resistor. 50mW
TRINKET RESET (SWITCH POWER BUTTON) - 150R (150 ohms) 0201 Thick Film resistor. 50mW


I recommend RS components.

FAQ

Q - How do I boot the switch into APX (RCM) mode?

A - You need to short out pin 10 on the right joycon rail to GND with a jig or modded joycon or paperclip (not recommended... Buy a jig you cheap-ass gyppo). Once shorted out, hold down vol+ and power. The switch screen should be off... Plug into your PC and it should recognise a APX device. Well done. You are in RCM.

Q - What glue should I use?
A - Only glue if necessary! Ideally if your soldering is of sufficient quality and your wire is thin enough, you don`t need glue. I use a bit because I am OCD. Anyway, use Epoxy. It`s what I use. Gives you some working time, is solid. Superglue makes a mess DO NOT USE SUPERGLUE. The only thing super about it is how it melts things. Epoxy won`t stick to the shield long-term, so bear that in mind. Pure Acetone will remove epoxy. Acetone tends to remove / melt anything to be warned. CHECK YOUR GLUE WON`T GO CONDUCTIVE OVER TIME - LOOKING AT YOU SCAMSUNG! The combination of heat cycles and absorbing of moisture can turn adhesive into a high-impedance connection!

Q - What size wire should I use?
A - I use AWG40 magnet wire or AWG30 Kynar. AWG40 goes onto components easier... And if you snap it, chances are the wire will snap and not the trace / component.
A2 - You can also use AWG30. I recommend Kynar wrapping wire but any will do. Looks nice, good resistance to elements, tidy. Nothing thicker than AWG30. You are just causing yourself more headaches. Trust me.

Q - Is AWG40 thick enough?
A - Yes. AWG40 is good for around 90mA.

Q - which methods do you recommend?
A - Connect all the straps...

Q - how do you recommend to set it up?
A - Fusee Suite. Search for Fusee Suite or go to link at top of this OP.

Q - My switch is flat and won't turn on.
A - Have you got the charger connected? Disconnect it or your switch won't boot! Boot to a payload (SX loader/Hekate), reconnect charger and leave on the payload menu and charge. Leave for 15 minutes and switch will start normally. It will continue charging one booted.

Disclaimer:
You have only yourself to blame. This voids warranty. This may or may not get you banned from online services. If it does, you got yourself banned. I`m not responsible if you kill your switch / your first-born with any of this in this post. I`m not infalliable. I`m partly senile. Do your own research. Kids, get bill payers permission before you attempt even using a screwdriver.
NUTSHELL: Don`t come having a go at me because you fooked your £300 console up. I`ll do my best to help you though if you do, Just don`t blame me.

Credits to Quantum-Cross, Atlas44, @Ninoh-FOX , @jcrorxp , @tecfreak, @mooglazer, @subcon959, @64Dp128k, @mikeleuskaldunak, @M-O-B, CTCaer, @evilsperm, @consolex and everyone else for valuable input.


IF YOU REQUIRE SUPPORT, IF YOUR CONSOLE ISN`T WORKING CORRECTLY... PLEASE POST A HIGH RESOLUTION PICTURE OF YOUR INSTALL. You might think it isn`t your soldering, but in all cases with the new methods, it is bad soldering. So, please post a picture.


A BRIEF WARNING - PLEASE READ
THIS MOD IS NOT FOR THE FEINT OF HEART. WE ARE SOLDERING TO TRACES AND COMPONENTS ON THE FRONT SIDE OF THE BOARD TO SAVE HAVING TO REMOVE THE BOARD AND SOLDER TO TESTPOINTS. IF YOU ARE STRUGGLING, OR THINK YOU ARE GOING TO STRUGGLE, PLEASE PLEASE SOLDER TO THE TEST POINTS NOTED IN THIS AND OTHER THREADS (YOU WILL NEED TO REMOVE THE MOTHERBOARD). DOUBLE - TRIPLE CHECK EVERYTHING. YOU HAVE BEEN WARNED!!!
Good soldering skills are needed!
A magnifying glass is needed!
Good soldering iron needed - ideally with a 0.3 conical tip. No more than 30w!
SECURE YOUR WIRES PRIOR TO SOLDERING. Stick them down with double-sided tape.
Only use glue if you need to and glue wires after soldering. Don`t glue the solder to the component!
Put the tiniest amount of glue on the PCB mask only. Never on components. Use a cocktail stick for more glue control!!!
Take a look at alternative solder points to get you out of the sh*t if you do rip something off the board
If you aren`t the best at soldering, then think very carefully about connecting to pin 6 capacitor (the one in these new methods). If you rip this pad, you WILL NEED TO REMOVE YOUR BOARD and run from a testpoint.
 

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mattytrog

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Right, I tried to resolder the ground but the problem is still here :(

With your instructions I saw switchboot device on my PC.

Have you another idea ?
Yes. Your SD card has to be wrong. All it can be. If it's booting the payload and hekate, it has to be your SD card
 

yanfox

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I just tried a brand new sandisk SDcard freshly fat32 formatted... same result I really don't understand what happen... :'(

Just to be sure of that, if I had a ground pb, It can't boot to hekate loader right ? And can't show me switchboot on my pc when connected ?
 
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mattytrog

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I just tried a brand new sandisk SDcard freshly fat32 formatted... same result I really don't understand what happen... :'(

Just to be sure of that, if I had a ground pb, It can't boot to hekate loader right ? And can't show me switchboot on my pc when connected ?
I think it's time for a photo of your install. Can you post one? As clear as you can? Thank you!

--------------------- MERGED ---------------------------

Is there posible way to have SX OS boot to CFW without going to the SX Menu.

Skip the SX Bootmenu.

THX
Working on it
 
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yanfox

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@mattytrog I'm confused... everything is OK... just didn't know how CFW/SX OS works...

When I saw nintendo logo avec SX OS or CFW I think there was a mistake... you were right @the first answer !

I apologize,

Thank you for your help et your great work again !
 
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taxco

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I think it's time for a photo of your install. Can you post one? As clear as you can? Thank you!

--------------------- MERGED ---------------------------


Working on it
damd,
Someting is wrong with my 2 switches.
Both wont charge when teir off, they only charge when teir on or in sleep.

What could couse the problem?
No RCM
 

mattytrog

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damd,
Someting is wrong with my 2 switches.
Both wont charge when teir off, they only charge when teir on or in sleep.

What could couse the problem?
No RCM

I'm guessing you have both straps connected? Vol and joycon?

I don't understand what you mean by "off" because as soon as you plug it in, it boots.

Is the dock light blinking when you put it in?
 
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taxco

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I'm guessing you have both straps connected? Vol and joycon?

I don't understand what you mean by "off" because as soon as you plug it in, it boots.

Is the dock light blinking when you put it in?

When i turn the switch on and boots in to horizon OS it gets charged normaly.
When i turn the switch completly off it stops getting charged.

Iam using the Nintendo Official charger.
Is it understandable now? thx
 

mattytrog

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When i turn the switch on and boots in to horizon OS it gets charged normaly.
When i turn the switch completly off it stops getting charged.

Iam using the Nintendo Official charger.
Is it understandable now? thx
Yes I know what you mean.

I just find that whenever you plug the switch into usb or the dock, it powers on. That's what is confusing me.

I'm guessing you are holding power to turn it off while it is plugged in?
 

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Yes I know what you mean.

I just find that whenever you plug the switch into usb or the dock, it powers on. That's what is confusing me.

I'm guessing you are holding power to turn it off while it is plugged in?

Noo, its this.
1 and 2

1. Switch is charing when powerd up, its shows right corner its charging.
2. When its off and i connect charger it wont charge, still in off state. ( even when i power it off with charger plugged in )
 

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This is awesome! The chainloader is absolutely amazing. Thanks for all the work!

I was wondering: Is there the original payload .bin file for said chainloader? I help my friends mod their switches and I find it way easier to just have their SD cards and use "start.bin"; I'd like to be able to run that start.bin via TegraRCMGUI.

I got it working great with the Trinketm0. Having it launch a .bin from the SD card is super versatile!
 

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This is awesome! The chainloader is absolutely amazing. Thanks for all the work!

I was wondering: Is there the original payload .bin file for said chainloader? I help my friends mod their switches and I find it way easier to just have their SD cards and use "start.bin"; I'd like to be able to run that start.bin via TegraRCMGUI.

I got it working great with the Trinketm0. Having it launch a .bin from the SD card is super versatile!
Erm... Sure! Hang on...

Tell you what... Try this. Lets make it a little more interesting.
Go to this thread...

https://gbatemp.net/threads/basic-m...oot-files-trinket-rebug-rcmx86-others.518574/

Go to near the bottom, you will see an "Experimental" section.
There is a version of Hekate there that builds / runs from your 0 folder. Can launch all your payloads straight from it.

Give that a try. Have a read. It isn`t normal Hekate. Might suit your needs?

--------------------- MERGED ---------------------------

Noo, its this.
1 and 2

1. Switch is charing when powerd up, its shows right corner its charging.
2. When its off and i connect charger it wont charge, still in off state. ( even when i power it off with charger plugged in )

Which straps do you have connected? Remind me.
 
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Erm... Sure! Hang on...

Tell you what... Try this. Lets make it a little more interesting.
Go to this thread...

https://gbatemp.net/threads/basic-m...oot-files-trinket-rebug-rcmx86-others.518574/

Go to near the bottom, you will see an "Experimental" section.
There is a version of Hekate there that builds / runs from your 0 folder. Can launch all your payloads straight from it.

Give that a try. Have a read. It isn`t normal Hekate. Might suit your needs?

--------------------- MERGED ---------------------------



Which straps do you have connected? Remind me.

TY! Love you 4ever.
 

mattytrog

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Noo, its this.
1 and 2

1. Switch is charing when powerd up, its shows right corner its charging.
2. When its off and i connect charger it wont charge, still in off state. ( even when i power it off with charger plugged in )
I`m guessing that...

1) You have Joycon and Vol+ straps installed...
2) The moment you connect, the switch is powering up, the straps are being shorted which will lead to you going straight to RCM. Thats why you aren`t getting the charging notification.

Try this...

With the switch off, hold down reset on your modchip, plug in to charger, wait for a couple of seconds and let go. That should stop both straps operating, thus allowing the charging notification to appear. Can you try this please?
 

mattytrog

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@mattytrog I'm confused... everything is OK... just didn't know how CFW/SX OS works...

When I saw nintendo logo avec SX OS or CFW I think there was a mistake... you were right @the first answer !

I apologize,

Thank you for your help et your great work again !
Vous êtes les bienvenus. Je parle un français raisonnable, donc si vous rencontrez un problème, vous pouvez me contacter via PM :)

Translate... Can contact me via PM and I`ll speak French the best I can. Not brilliant though!
 
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I`m guessing that...

1) You have Joycon and Vol+ straps installed...
2) The moment you connect, the switch is powering up, the straps are being shorted which will lead to you going straight to RCM. Thats why you aren`t getting the charging notification.

Try this...

With the switch off, hold down reset on your modchip, plug in to charger, wait for a couple of seconds and let go. That should stop both straps operating, thus allowing the charging notification to appear. Can you try this please?

I only have joycon strap installed.

Volume up is the strap going from rst point right? I dont have this on installed.

I will try tomorrow, thx for all the help
 

mattytrog

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I only have joycon strap installed.

Volume up is the strap going from rst point right? I dont have this on installed.

I will try tomorrow, thx for all the help
It used to be. Not any more.

If you only have the one strap and no autoRCM, I`m struggling finding a reason. It shouldn`t happen.

We talk tomorrow. I want to get to the bottom of this.
 

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How your guy handle this problem I was big wrong ... try to change the USB port but now I can’t remove it ....soldering all the screw using wick fail

--------------------- MERGED ---------------------------

Regarding BQ24193; I think I'm in the same situation. Is this the correct one? https://www.ebay.de/itm/163344443687
Do u fix ?
 

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