XY - Event flags for rebattle Xerneas/Yveltal

[MegaBoyEXE]

I was messing up with PKHeX Event flags in XY, and managed to rebattle Xerneas/Yveltal. Unfortunately this isn't a simple flag.

First, the flags that enable Xerneas/Yveltal in HQ basement are the following:
Flag Status 0837 - UnSet
Flag Status 0838 - Set

The big problem now is that there's no way enter the Team Flare's HQ in Geosense Town after the events are finished. So, we must change other stuffs:
Constant 159 must have value 7 to enable entering the elevator in the big rock (after events, the value is changed to 9)
This will let you enter the hidden door anyways and reach the HQ basement, where Xerneas/Yveltal is awaiting.
(If you change also constant 49 to value 4640, the Geosense Town scenary will behave the same as the event, but this is not necessary).

Second problem is that after you capture Xerneas/Yveltal you will need to rebattle Lysandre. I couldn't find a way to prevent this yet.
All I know is that if you lose the battle with Lysandre, the constant 202 will have value 6, so when you reenter the basement, Lysandre will be awaiting to battle.
After winning battle, the constant 202 will have value 7, and constant 159 will have value 9.

If anyone that understands more about the event flags can do more research about this, maybe there's a way to disable Lysandre battle right after capturing the Legend.
 

Edited February 5, 2017 by MegaBoyEXE

[IgnisSpace]

I have tried this, only resets the Lysandre's second battle after you have captured the legendary

Once you have caught Xerneas/Yveltal try these flags and constants

Flags :

Unset 775, 776, 777, 780, 782, 786, 787, 800, 935, 948, 1033
Set 897, 934, 1037, 1063, 2748
Constants:
33: 4117
34: 8248
49: 4640
159: 7
171: 4
199: 0
202: 5
329: 1


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If Its your 1st visit and you want to speed things up

Spoiler

Skip Lysandre 1st battle set Flag 783, 784, 801

Skip other battles  Flag 275, 278, 899 Constant 159: 5>7, 212: 0>4, 202: 0<5

Not sure if it works 100%

 

Edited October 17, 2023 by IgnisSpace