(Additional Steps)
0.1. Install HxD on your computer and download the FE13 RAM Excel Calculator
HERE (If you don't have Excel installed on your computer, you can still use it by uploading it to a Microsoft Onedrive account)
(0.1.1. If you're lazy/didn't understand this written tutorial, just follow Rey's guide from
HERE instead)
0.2. Dump your 3ds RAM with the
game OPEN, in SUSPEND state
0.3. Eject your SD card from your 3ds and stick it into your computer's SD reader/ USB SD reader connected to your computer
0.4. Take the RAM dump off of your SD card and place it somewhere on your computer, then open it on your 3ds
0.5. Follow Rey's guide
HERE to set up the Excel calculator for your own copy of Awakening (once you do all the steps two or three times, you start to get the hang of it and it becomes almost second-nature, also, the pause button is your friend). Once the calculator is setup, go on to the next section of this guide.
(0.5.1. If when using the Excel calculator and it automatically converts an address you're using into Scientific Notation, right click the cell, click "number format" and select "text" from the options. It should now work without converting it and screwing everything up ;D )
1. Open up
this site.
2. Now convert your addresses to a cheat code.
If it's just one byte, you add a "2" to the address and " 000000XX" to the end. Eg. 0x134DE9C as a cheat code is 2134DE9C 000000XX.
For a string of two bytes, you add "1" and " 0000XXXX" instead. For four bytes, you add "0" to the front and " XXXXXXXX" to the end.
3. Then to actually change values, replace the XX(s) with the new value.
Example: If you're wanting to change one value at "0134DE9C" to "54", the final cheat code should be 2134DE9C 00000054.
Note: If you're editing a string of bytes, you will need to enter the values in reverse order.
4. After inputting all your cheat codes, the site will give you a QR code.
5. Open up your game again, then while the game is running, switch to the internet browser. Then scan the QR code you created.
6. The bottom screen will tell you the exploit is running and the browser will eventually crash. Your 3DS will tell you to power down again, but ignore it and return to your game. If successful, you should have edited the RAM and the changes will be instant.
Credit to VincentASM, whose tutorial I pretty much copy-pasted excluding a few minor edits.
Credit link here
(That link to VincentASM answers quite a few questions, and also has links to what values indicate which skills/items. So yeah, before asking for those, visit there.)