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

Discussion in 'Switch - Tutorials' started by mattytrog, Jun 20, 2018.

  1. metaljay

    metaljay GBAtemp Fan

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    Jan 10, 2012
    soldering done, will downgrade firmware and turn off autoRCM... bad news you'll have to wait a few hours as now going out...
    god that point was hard to solder!
    [​IMG]

    [​IMG]
     
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  2. Moquedami

    Moquedami GBAtemp Fan

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    Nov 16, 2006
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    Why 5 cables?
    I thought you were going for method 1
     
  3. mattytrog
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    mattytrog Up yours...

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    He has. It is method 1 he has done but with a joycon strap (hence 5 wires).

    Looks like we have sorted out "everything" once and for all depending on feedback...
     
  4. Moquedami

    Moquedami GBAtemp Fan

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    Mhh, so the joycon strap would work with the first method too and that way you dont need auto RCM. Only power on with vol + pressed. Is that right?
    Any cons in using the joycon strap?
    The joycon will charge and get detected the same?
     
  5. mattytrog
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    mattytrog Up yours...

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    Correct. All should be good.

    Saying that... Not had one report of it working or not working. Yet.
     
  6. metaljay

    metaljay GBAtemp Fan

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    Jan 10, 2012
    ok, ive downgraded to 3.02 and turned off autoRCM, console crashes upon boot (get Nintendo error code) so it means I messed up with the downgrade... (my fault haha). Ill restore from NAND backup and report back in the morning.

    big edit!!! so, I forgot I can just hold down Vol+ Power and can still see if chip boots quickly! so far so good! it instantly shows missing 0 folder screen (the one you created). so also means I got the SD layout wrong...
     
    Last edited by metaljay, Nov 8, 2018
  7. mattytrog
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    mattytrog Up yours...

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    ok J. Thanks for testing! If you can`t sort it, drop it round. Won`t bill you or anything!
     
  8. noX1609

    noX1609 B9S freak ;)

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    Aug 30, 2016
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    On Method one is there AutoRCM really needed? Because i wanted to do the hack and to enter RCM i thought i solder a reed switch into the joycon and press Power + Vol+ at boot. Does this work or is autorcm the only possibility with this installation with only 4 wires?
     
  9. mattytrog
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    mattytrog Up yours...

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    You don`t need autoRCM if you want to save fuses. Just mod a joycon instead. But all methods are changing shortly to not use autoRCM. If you want to wait...
     
  10. metaljay

    metaljay GBAtemp Fan

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    Jan 10, 2012
    @mattytrog i have restored NAND backup, all boots fine when press power button

    when i cold boot holding vol+ power it INSTANTLY goes to the red screen you made ("SD Card 0 Folder? .2 file missing").

    I have double checked my SD card layout and cannot see what ive got wrong (even pasted start.bin in both locations to be safe)

    [​IMG]
     
  11. mattytrog
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    mattytrog Up yours...

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    Yessss!!!!!!!!!
    Rename to 00.s2 (the 01.s2)
     
  12. metaljay

    metaljay GBAtemp Fan

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    Jan 10, 2012
    Works perfect!

     
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  13. mattytrog
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    mattytrog Up yours...

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    I fucking love you.
     
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  14. metaljay

    metaljay GBAtemp Fan

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    haha its all your baby! i just did what you told me to!
     
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  15. mattytrog
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    mattytrog Up yours...

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    Right... Been hard at work...

    I`ve made the all-in-one loader easier to understand - check a few posts back. I made a video with a new fail graphic, listing what files should be there. So all you have to do is eject SD, boot and it will tell you what files it needs.

    PHew... Got some work ahead of me now. I`ve got a final version of the bootloader ready. Just the same, but I`ve just cleaned it up.

    Tell you what, Jord... Couldn`t have tested it out without you. Cheers for keeping the faith!

    Much appreciated... Your vid will be going in OP. First tester!
     
    Last edited by mattytrog, Nov 8, 2018
  16. metaljay

    metaljay GBAtemp Fan

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    Jan 10, 2012
    ill have a look in the morning, im at work for 6!
    are we 100% done with soldering now? my mrs is going mad at me for getting it out the loft haha.

    are the only things left to tweak software wise now?
     
  17. mattytrog
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    mattytrog Up yours...

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    Apr 27, 2018
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    Yes. Just software.

    If you want to enter UF2 mode, leave half a second between reset presses... Thats the only difference. Before you did a PRESS - PRESS, you just need to do a PRESS - wait half a second - PRESS.

    But no, all your soldering work is complete. Well done!
     
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  18. noX1609

    noX1609 B9S freak ;)

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    Aug 30, 2016
    Germany
    Thanks for your reply. Think will do this install then or is there something new/easier/better way coming in the next few days? Because don‘t want to wait too long :)
     
  19. mattytrog
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    mattytrog Up yours...

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    Apr 27, 2018
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    Today ;)
     
  20. metaljay

    metaljay GBAtemp Fan

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    Jan 10, 2012
    If you scroll to the top of this page and look at my install, that will be the new method
     
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