Yes, I am from Indonesia.
LOL, it will be a fun weekend then.
Do you have any heads up for Part 4 and 5?
Anything...it could be some steps that were not clearly written in the tutorial perhaps?
Yes. Here are some parts to take notice.
On Part 4 Section I, the guide tell you to TinyFormat your Rednand twice before downgrading it. After formatting it twice, 3DS will ask you to complete initial setup (the usual stuff: name, birthdate, internet connection, etc).
I decided to skip configuring my internet connection (wifi password), without realizing that I actually need it later on Section III.
Yes, you can configure your wifi password later on Section III, but at that time you've already downgrade your firmware to 2.1.0, so your 3DS is kinda unstable (for example, when setting up my wifi password, I couldn't exit and come back to homescreen properly, I need to power off the 3DS).
I recommend to setup your wifi password earlier, so you don't risk having any problem.
On Part 5 Section II - 6, after finish installing A9LH, the last step is to enter the Luma3DS menu by holding select on boot. I thought this is the same thing just like when accessing Menuhax. Usually when accessing menuhax, I just push the button 1-2 seconds after powering up.
Got blackscreen and I thought something was wrong with my A9LH or my 3DS may be bricked. I didn't know that you actually have to hold "Select"
really quickly after the Power button.
That's because A9LH boot very quickly, so it actually misses my button press. You need to hold the Select button
immediately after powering up (or just hold the Select button
before pressing power).
