Hacking Question Switch bricked and cannot go to RCM

[ly0koS]

You using a windows computer?

Yes, and also tried with a macbook pro, no luck.

 

[Hayato213]

Yes, and also tried with a macbook pro, no luck.

Okay on the windows computer reinstall the tegrasmashgui driver,

https://github.com/eliboa/TegraRcmGUI/releases

For the computer to detect the switch you need to have enough charge for it to show up, if the driver is setup correct.

 

[ly0koS]

Okay on the windows computer reinstall the tegrasmashgui driver,

https://github.com/eliboa/TegraRcmGUI/releases

For the computer to detect the switch you need to have enough charge for it to show up, if the driver is setup correct.

I think that means the driver is installed correctly.Will let the switch charge for a day and see if I got any luck.
Also,maybe a dumb question, if I disconnect switch's battery and connect to my computer,will that bring up to RCM mode?

 

[Hayato213]

View attachment 237414
I think that means the driver is installed correctly.Will let the switch charge for a day and see if I got any luck.
Also,maybe a dumb question, if I disconnect switch's battery and connect to my computer,will that bring up to RCM mode?

Well try to push a payload as you installed the driver already, the libusbk is what you needed.

 

[comput3rus3r]

you should have used sxos.

 

[ly0koS]

Well try to push a payload as you installed the driver already, the libusbk is what you needed.

Emmm...the computer still didn't pick up the switch.Will let the switch charge for a while and see if any mircale happens.

 

[HollowGrams]

Emmm...the computer still didn't pick up the switch.Will let the switch charge for a while and see if any mircale happens.

I'd be amazed if any of this fixes your issue. You might have to re-build your nand if possible. All this happened after you flashed old boot 0/1.

 

[ly0koS]

I'd be amazed if any of this fixes your issue. You might have to re-build your nand if possible. All this happened after you flashed old boot 0/1.

Yeah....It's so frustration that plug in my switch and my computer find nothing....
And what I only do to my nand is restore my boot0/boot1.

 

[ly0koS]

One update:
After carefully observe the power meter.I found out that there will be a power drop after holding power button for 15s.Also will get a power rise by press the power button again.
This is like a normal power off & on.
But the power range is so SMALL,just from 2.5W to 3.2W....
I doubt that chip won't even boot into RCM mode.

 

[m0mij1]

One update:
After carefully observe the power meter.I found out that there will be a power drop after holding power button for 15s.Also will get a power rise by press the power button again.
This is like a normal power off & on.
But the power range is so SMALL,just from 2.5W to 3.2W....
I doubt that chip won't even boot into RCM mode.

Have you tried disconnecting the battery completely from the Logic Board? If the battery is causing weird power ratings, it maybe worth attempting a tethered power boot to see if voltage changes.

 

[ly0koS]

Have you tried disconnecting the battery completely from the Logic Board? If the battery is causing weird power ratings, it maybe worth attempting a tethered power boot to see if voltage changes.

Yeah I tried to do that, but also PC got nothing.
Also, I discovered that my switch is actually charging at a strange rate,at 15V/0.5A. But a few hours before that, I measured my battery voltage is 3.7V as rated.
When I plug my switch onto my computer's USB port, it draws power at 4.79V/0.49A.
Wired right?
And seems my switch will actually respond to POWER button.As I long pressed it,the voltage and Amp will change.

 

[m0mij1]

Yeah I tried to do that, but also PC got nothing.
Also, I discovered that my switch is actually charging at a strange rate,at 15V/0.5A. But a few hours before that, I measured my battery voltage is 3.7V as rated.
When I plug my switch onto my computer's USB port, it draws power at 4.79V/0.49A.
Wired right?
And seems my switch will actually respond to POWER button.As I long pressed it,the voltage and Amp will change.

That is very strange.
I know you said you tried a MacBook Pro but have you tried using Fusee-Interfacee? Oddly I have had more luck sending payloads with my iMac than a PC. Doubt this will make a difference but worth a try.

 

[ly0koS]

That is very strange.
I know you said you tried a MacBook Pro but have you tried using Fusee-Interfacee? Oddly I have had more luck sending payloads with my iMac than a PC. Doubt this will make a difference but worth a try.

I will try that after work when I back home.
Thanks for advice.
I also want to ask a question,from that power draw switch got from my PC,can you tell that switch is actually in RCM mode or not?
I think if the Soc is dead,it shouldn't draw any power from my PC,right?
And if the nand is misconfigured,the Soc should also boot into RCM mode,right?

 

[m0mij1]

I will try that after work when I back home.
Thanks for advice.
I also want to ask a question,from that power draw switch got from my PC,can you tell that switch is actually in RCM mode or not?
I think if the Soc is dead,it shouldn't draw any power from my PC,right?
And if the nand is misconfigured,the Soc should also boot into RCM mode,right?

I'll have to get back to you on what the voltage should be while in RCM mode. Don't have a USB-C Voltage Tester with me at the moment.
Do you get the same voltage while rotating the USB-C cable 180-degrees?

 

[gamesquest1]

disconnect battery and the Emmc chip, this will ensure RCM mode will be initiated upon plugging the USB cable in, just reconnect them both before sending your payload over, I don't see how or why you would be failing to get into rcm mode with the jig, but thats a surefire way of ruling out it simply being an issue with a faulty rail or anything not detecting the jig.

 

[ly0koS]

disconnect battery and the Emmc chip, this will ensure RCM mode will be initiated upon plugging the USB cable in, just reconnect them both before sending your payload over, I don't see how or why you would be failing to get into rcm mode with the jig, but thats a surefire way of ruling out it simply being an issue with a faulty rail or anything not detecting the jig.

Will give it a try.Can the emmc chip came off the switch without soldering?

 

[gamesquest1]

Will give it a try.Can the emmc chip came off the switch without soldering?

yeah its just a little board clipped into the motherboard, you dont even need to take it off completely, just pop it off

 

[paulzheng]

View attachment 237414
I think that means the driver is installed correctly.Will let the switch charge for a day and see if I got any luck.
Also,maybe a dumb question, if I disconnect switch's battery and connect to my computer,will that bring up to RCM mode?

i thought you should go visit www.91wii.com can slove the simple problem.
unpatched switch can use the RCM exploit with any appropriate payloads except you did something wrong.
check bootloader/hekate_ipl.ini and maybe autoboot=1 so could entry hekate's recovery mode menu.

 

[ly0koS]

i thought you should go visit www.91wii.com can slove the simple problem.
unpatched switch can use the RCM exploit with any appropriate payloads except you did something wrong.
check bootloader/hekate_ipl.ini and maybe autoboot=1 so could entry hekate's recovery mode menu.

Maybe my problem is not that simple.
1551.

 

[paulzheng]

Maybe my problem is not that simple.
1551.

why not buy one rcmloader dongle ?