N3DSXL Won't turn on, blue light flashes on and off.

What have u tried?

 

Your better off buying a NTRBoot comparable flashcart installing b9s

 

CFW: I formatted my 2ds's sd card and now it wont turn on [post #17]

 

See the Updating B9S and step 7's Finalizing Setup.

 

The Updating B9S guide can't done be if you have the original boot9strap v1.0 installed because that version can't read versions of Luma3DS newer than v7.1.

You'll need to install/update boot9strap v1.3 using the SafeB9SInstaller v0.0.7 as the sdmc:/boot.firm. Once that's done, switch out that boot.firm with Luma3DS v10.1.3 and follow the rest of the Finalizing Setup.

 

What you have installed is the original v1.0 of boot9strap on the 3DS system. That's the bootloader responsible for launching FIRM payloads (ie, boot.firm) from the SD card (external memory) or the CTRNAND (internal memory) if the SD card is missing or does not contain that file.

That has to be updated or reinstalled on the FIRM0 and FIRM1 partitions of the 3DS system's NAND (general or entire internal memory), or else your n3DSXL won't be able to use the latest Luma3DS v10.1.3.

After successfully updating to B9S v1.3 with the SafeB9SInstaller (temporarily as the sdmc:/boot.firm) and boot9strap payload (sdmc:/boot9strap/boot9strap.firm , boot9strap.firm.sha , the *.firm gets injected/overwrites/updates the old versions on those FIRM0/1 partitions), you'll then copy all your main setup files back onto the SD card, replace the sdmc:/boot.firm with latest Luma3DS, and redo the Finalizing Setup to update the other homebrew .CIA & .3DSX apps AND to also update or install CTRNAND Luma3DS (to be able to boot without an SD card).

 

When following the Updating B9S tutorial, instead of having these:

• sdmc:/boot.firm (Luma3DS v10.1.3)
• sdmc:/boot9strap/boot9strap.firm
• sdmc:/boot9strap/boot9strap.firm.sha
  
• sdmc:/luma/payloads/SafeB9SInstaller.firm

, rename the SafeB9SInstaller and put this in place of Luma3DS.

• SafeB9SInstaller.firm → boot.firm

Follow that guide but with this SD card setup.

• sdmc:/boot.firm (SafeB9SInstaller v0.0.7)
• sdmc:/boot9strap/boot9strap.firm
• sdmc:/boot9strap/boot9strap.firm.sha

After boot9strap v1.3 is installed onto the n3DSXL, delete those three files. Add back the Luma3DS v10.1.3 as the sdmc:/boot.firm, and then complete the rest of this with Finalizing Setup.

 

Try cleaning the microSD card slot reader of any dust contamination with a drinking straw. Do not blow air into the slot as spit can corrode the pins. Instead, pull the air as a DIY vacuum.

Try inserting the microSD card at different angles to get a better seating connection. If that first card fails, take a different microSD card, reformat it in [ FAT32 | 32 KB cluster size | MBR disk | Primary partition ], and add in the boot.firm (SafeB9SInstaller) & boot9strap *.firm & *.sha.

If that also doesn't work, maybe your n3DSXL's microSD card slot reader was on its way out where it's too worn to seat the pins against the card contacts. You might need to disassemble and replace the reader.

LATE EDIT - Also try the battery trick. This is in case the n3DSXL's RAM is stuck in some sort of failed boot loop.

 

have you tried removing the game card? sometimes that causes problems

 

Since I'm helping another user who's having the same problem,

• Am exeption occurred for N3DS CFW [post #27]

, start at this row.

• "After upgrading or updating to B9S v1.3, delete those above five (5) files."

 

Your n3DSXL has software brick.

Repair the 3DS firmware + custom firmware with CTRTransfer (Type D9) - CTRTransfer. Carefully read and follow the Instructions.

If you're using that CFW starter kit, you can start at step 6 if the SD card's been checked before in H2testw.