Hacking my inside dongle(SAMD21 )

[jj56185]

MOD of trinket M0，arduino zero。。。thanks for all the Contributors。
with the reed switch connect to the RES，it easy to change the firmware(UF2)

 

[iriez]

Can you give us more details? How does it get put into reset mode for flashing? Is this a custom pcb you made, it doesn't look anything like the trinket m0 ?

 

[Hayato213]

Why it is next to the battery?

 

[jj56185]

Can you give us more details? How does it get put into reset mode for flashing? Is this a custom pcb you made, it doesn't look anything like the trinket m0 ?

Q
This is trinket m0.But I deleted everything useless,such as LED,button and LDO.Another IC is USB signal switch IC, when payload is done, the IC can disconnect the USB.That 's all.

 

[mrdude]

Can you post your CURRENT.UF2 file please, I'm trying to test my own board - also using samd21g18a - but can't use the sam21e files as the code for those doesn't work on the sam21g, I can't get it to send the payload to the switch - but the trinket I have works fine.

 

[jj56185]

Can you post your CURRENT.UF2 file please, I'm trying to test my own board - also using samd21g18a - but can't use the sam21e files as the code for those doesn't work on the sam21g, I can't get it to send the payload to the switch - but the trinket I have works fine.

you need to layout them with the same gpio，can you flash the bootloader？ just flash it to a trinket m0 bootloader is OK，G18 and E18 is the same usb D+ D- gpio，but if bootloader is difference. the arduino Port D0 D1 D2 is difference

 

[mrdude]

If I dump the trinket flash that works with sxox payload - then flash that dump onto sam21g18a - and use pins 34/33/gnd as D+ and D-, It doesn't send the payload? (even though connected to a pc these are the correct pins to use for usb as I can see the board as trinketboot)

 

[aos10]

Did you put it on the battery itself?
This doesn't feel right at all.

 

[jj56185]

If I dump the trinket flash that works with sxox payload - then flash that dump onto sam21g18a - and use pins 34/33/gnd as D+ and D-, It doesn't send the payload? (even though connected to a pc these are the correct pins to use for usb as I can see the board as trinketboot)

they have the same bootloader?

 

[mrdude]

they have the same bootloader?

Trinket flash is 256kb, doing a trinket dump using openocd dumps the bootloader (address 0x0 to 0x1FFF) and the sketch (starting address 0x2000), the complete dump can be flashed to a samd21g18a, and indeed shows up as TRINKETBOOT on a quick resest (twice), however the say you have dumped the trinket containing the sxos payload and then flashed that to your bare samd21g18a - it's lucky is it sends the payload once out of 20 times. Maybe due to some sort of timing issue.

 

[Joxley192]

Will u be selling any of these if so how much

 

[The0919]

Why the fucc did you have to call it 'my inside dongle', its sounds so dirty

 

[MatinatorX]

Your dongle looks identical to this: https://www.aliexpress.com/item/dea...h-RCM-NS-Short-circuit-tools/32908068356.html

As found by @kristiansja in this thread: https://gbatemp.net/threads/the-chinese-have-created-a-modchip.514842/

Did you make this yourself and list it already?

 

[kristiansja]

Your dongle looks identical to this: https://www.aliexpress.com/item/dea...h-RCM-NS-Short-circuit-tools/32908068356.html

As found by @kristiansja in this thread: https://gbatemp.net/threads/the-chinese-have-created-a-modchip.514842/

Did you make this yourself and list it already?

lol wtf