So this is an unbricker for DSTwo? Or what?

Strange case, some people were reporting the latest DSTWO firmware update didn't work on 3DS 3.0.0-6, others were reporting it did work. Others were reporting it worked at first, then just stopped working after a couple of days.

This fix is obviously for those people where the latest DSTWO firmware didn't work.

The only DSTWO's that were ever bricked were caused due to DS hardware malfunctioning and losing power before the DSTWO could complete the update process. I think those are permanently bricked, so no luck for users who had that happen to them.

Thanks a lot for this information, this is getting interesting now. We'll keep an eye on this.

I'm sure Nintendo is doing some research about this cart, they already stopped the "usual upgrade process" of the DS2 with the release of the 3DS. If Nintendo could get rid of such a cart like Supercard or Acekard entirely, that would be a great success for them. These kids usually don't buy a new cart once their cart stops working. At least not every year or so. They just do some rage spamming on internet forums and give up piracy in most cases then.

Thank you for this info Ariel Rebel. I will link people to this thread from now on when I see this problem. I do thinks it's a shame that this can't be done on a DSi. Damn you Nintendo!!

Thank you, I noticed a link wasn't working properly, so I've fixed it.

Will this work on the current 1.19 firmware?

I am very happy to say that I have just proven you wrong in this regard.  It is possible to use your method to unbrick a DSTwo that was bricked due to a loss of power during the update process.

An hour ago, I was updating my DSTwo with firmware v1.19 on an old DS Lite when the battery died, effectively bricking the cart.  After a while of googling, I found your thread here and tried it out using an original (not copycat) R4.  While it worked and I was able to get the DSTwo to work again on the DS Lite, when I reset it, the cart was still bricked.

But I've found that it can be unbricked:

To unbrick with this method, copy a firmware update file (dstwoupdate.dat) to the root of your DSTwo.  Then follow the steps to get the DSTwo running again:



Once the DSTwo has booted, it will ask if you want to update the firmware. DO THIS!  Since the power cut out during the firmware update process, the cart became bricked because the firmware files were incomplete or corrupted.  Like trying to start a car with only half of the engine.  Updating the firmware restores the corrupted or lost files and allows the cart to boot again.

After the update was complete, I reset the DS Lite with the newly-updated DSTwo in it as normal (without using the additional flashcart and dstwo_load_NDSL.nds), and the DSTwo came back to life instantly!

Additional Info:
Before I updated the firmware, I had removed all files from the microSD except for the EOS files necessary to get it running (the _dstwo folder and ds2boot.dat).  After the update successfully completed, I copied a backup of all of the files in my previous DSTwo configuration (plugins, games, skins, etc.) back onto the microSD and it all came back to life, complete with my custom Fallout: BoS skin.

Thank you very much Ariel.  You've saved me a ton of pain and cash.