Hacking PermaRCM until Atmosphere

[Mat37]

I use it and as long as you make sure that it's completely turned off (not in RCM) when you stop using it the battery is fine

 

[mikey420]

DUDE ITS FKN BULLSHIT
it's the same guy that said hakate breaks PoC facepalm

Keep trusting anyone in the internet.. kids..

Your full of crap. The device does not charge in RCM mode. You either had it off or in horizon OS. It's not only TUX that claims this but also a range of developers well known throughout the scene.

 

[Draxzelex]

DUDE ITS FKN BULLSHIT
it's the same guy that said hakate breaks PoC facepalm

Keep trusting anyone in the internet.. kids..

First, swearing indicates you are not willing to accept facts outside of your own beliefs. Second, here's not one, but 2 more sources to back up a possible failure to charge.

except the PD controller can still get stuck somehow and not let the console to power up, so you will have to disconnect and reconnect the battery in that case

View attachment 125078

 

[NeoSlyde]

First, swearing indicates you are not willing to accept facts outside of your own beliefs. Second, here's not one, but 2 more sources to back up a possible failure to charge.

This is old statement get updated
do some research before saying misinformation

 

[Red1Reaper]

This is old statement get updated
do some research before saying misinformation

do some research before saying misinformation yourself, your test was not good enought to prove your point and better tests prove the oposite point.

 

[Plague1s]

Been using autorcm even before the sleep-fix. Never had to disconnect my battery to get it charging after dying.

 

[Zumoly]

I will be trying to charge my battery from 97% now in RCM to confirm wether it works or not.

 

[mattytrog]

Hekate, AutoRCM, trinket m0, soldered in and you are golden. Plug in dongle / jig? Not needed. At least on my switch. All internal.

 

[sj33]

Not exactly sure about it not charging while in "RCM" mode, but then again, realistically, why would you leave it in RCM mode? RCM mode is a middle man to pass into Hekate..just boot into CFW or into the original SFW...I can prove it charges in either one of those, and that's even reflected in https://gbatemp.net/threads/important-psa-autorcm-battery-warning.505192/ which hasn't been updated, since hekate has supported sleep mode for half a week now.

Am I missing something? Or misunderstanding?

The original fear was that if you left the Switch in sleep mode for a long time and it naturally drained to 0% battery, there would be no way to boot up the Switch due to not being able to charge in RCM mode, resulting in a de-facto 'brick'.

This seems to be not the case, however.

 

[WolfThatGoesMoo]

You can charge in RCM. The battery controller and USB-PD still work
[...]

[Question asked: Thought there was a chance to lock it up?]
For sure you can lock it up if you write at [0x40000000 - 0x40003000], via fusee-gelee/shofel2 or through a relocated payload.

But I spent the most time in RCM and a little bit in hekate (when I actually run the test payload and I reboot into rcm again).
My battery is always 100% after a "normal" dev session.

E.g., yesterday I had a lot of free time and played Bayo 2 handheld. Then I started development at 6%.
The time I got to sleep, it was 100% (and it was 99% of the time in RCM).

Btw, I use intermezzo.bin v1, if I remember correctly.

EDIT:
I forgot the most important: I never triggered that bug before. So I can't bug test it.

Hekate, AutoRCM, trinket m0, soldered in and you are golden. Plug in dongle / jig? Not needed. At least on my switch. All internal.

Good method! hopefully this one doesn't blow up haha

 

[mattytrog]

Good method! hopefully this one doesn't blow up haha

Too right. The first one only blew through me taking a shortcut too far finding a 1.8v - gnd switchable point. All my own fault.

Ill do a writeup over weekend if I get the playtime

 

[WolfThatGoesMoo]

Too right. The first one only blew through me taking a shortcut too far finding a 1.8v - gnd switchable point. All my own fault.

Ill do a writeup over weekend if I get the playtime

Excited to see it! Going to make my own if there's a good guide. I'm more of a software guy than a hardware guy, but I'm down to try

 

[Zumoly]

I will be trying to charge my battery from 97% now in RCM to confirm wether it works or not.

Alright guys.
After leaving my Switch in RCM mode for 10 minutes with the battery at 96% I can confirm that the battery does charge while in RCM.

Steps taken:
1. With battery at 100% I played Zelda for like 10 min
2. Press & hold power button, select restart
3. While device is restarting, press & hold vol+ with the right joycon hacked inserted
4. Plugged the battery for 10 min
5. Restarted by injecting @CTCaer Hekate payload
6. Found the battery at 98%

 

[NeoSlyde]

Alright guys.
After leaving my Switch in RCM mode for 10 minutes with the battery at 96% I can confirm that the battery does charge while in RCM.

Steps taken:
1. With battery at 100% I played Zelda for like 10 min
2. Press & hold power button, select restart
3. While device is restarting, press & hold vol+ with the right joycon hacked inserted
4. Plugged the battery for 10 min
5. Restarted by injecting @CTCaer Hekate payload
6. Found the battery at 98%

See, I was right
And people started bashing me because I gave actual proofs

 

[WolfThatGoesMoo]

Alright guys.
After leaving my Switch in RCM mode for 10 minutes with the battery at 96% I can confirm that the battery does charge while in RCM.

Steps taken:
1. With battery at 100% I played Zelda for like 10 min
2. Press & hold power button, select restart
3. While device is restarting, press & hold vol+ with the right joycon hacked inserted
4. Plugged the battery for 10 min
5. Restarted by injecting @CTCaer Hekate payload
6. Found the battery at 98%

A second test you can try is,
1. toggle AutoRCM mode through Hekate.
2. Sit in FTPd transferring files forever.
3. Backout and see that you're at 73% battery.
4. Take a break to eat, because, #AlwaysEating and decide to plug in your switch to charge.
5. Finish eating, and unplug the switch. Power it off.
6. Power it on, boot into Hekate, toggle AutoRCM off, back out, turn it off completely.
7. Boot normal SFW and confirm you're at 97% battery.

 

[Zumoly]

See, I was right
And people started bashing me because I gave actual proofs

Yeah it wouldn't feel right if the battery did not charge in RCM mode because battery taking charge is hardware based rather than software.
I understand the warning against AutoRCM for people who might forget to plug their charger while in this state as their is no software mechanism to prevent battery from completely depleting hence causing a bigger issue.

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

A second test you can try is,
1. toggle AutoRCM mode through Hekate.
2. Sit in FTPd transferring files forever.
3. Backout and see that you're at 73% battery.
4. Take a break to eat, because, #AlwaysEating and decide to plug in your switch to charge.
5. Finish eating, and unplug the switch. Power it off.
6. Power it on, boot into Hekate, toggle AutoRCM off, back out, turn it off completely.
7. Boot normal SFW and confirm you're at 97% battery.

Sorry no.
I don't use AutoRCM, never have, never will.

 

[Draxzelex]

Explain this situation then.

I've done the following:

1. Install AutoRCM and boot into Horizon, disconnecting the Switch from the computer.
2. Let the Switch battery get to 50% in Horizon.
3. Completely power off the system.
4. Plug in the Switch to a power source, which causes it to enter RCM.
5. Let it sit plugged in and in RCM all day.
6. Unplug the Switch from the power source and quickly load Horizon.
7. The battery is at 100%.

I can't think of any explanation for this other than the Switch charging in RCM. The OS not lowering the battery percentage doesn't explain it being at 100%.

You're probably right. I performed this test a day or two ago. I powered on my Switch today, and it's dead or nearly dead. It definitely was not left in RCM.

 

[Lacius]

Alright guys.
After leaving my Switch in RCM mode for 10 minutes with the battery at 96% I can confirm that the battery does charge while in RCM.

Steps taken:
1. With battery at 100% I played Zelda for like 10 min
2. Press & hold power button, select restart
3. While device is restarting, press & hold vol+ with the right joycon hacked inserted
4. Plugged the battery for 10 min
5. Restarted by injecting @CTCaer Hekate payload
6. Found the battery at 98%

See, I was right
And people started bashing me because I gave actual proofs

It has been confirmed with proof of how the system works that the Switch does not charge while in RCM. However, if a Switch with AutoRCM dies, it will still be able to trickle charge enough to enter RCM and load Horizon through a payload.

In other words, having AutoRCM installed isn't dangerous, but it might make things a little inconvenient if your system completely dies.

 

[Zumoly]

It has been confirmed with proof of how the system works that the Switch does not charge while in RCM.

I don't understand this bit after what I have done.
Do you mind sharing the link to that proof?

 

[Lacius]

I don't understand this bit after what I have done.
Do you mind sharing the link to that proof?

You can find some of what you're looking for here. In summary, the battery percentage becomes incorrect when doing what we did as a test.