Leaderboard

Gen 3 save files are split into a current save and a backup save (0 - 0xDFFF and 0xE000 - 0x1BFFF), which is which changes everytime you save your game. These saves are each split again into 14 blocks with 4096 (0x1000) bytes each, these blocks are not static, there offsets change. Each time you save, all the blocks get moved up by 1. To find the correct offset now we first need to find out where our current save is. Therefore we are going to check the save counters. I compare the value at 0xFFC - 0xFFF with the one at 0xEFFC - 0xEFFF. The second one is higher in my case so the current save is between 0xE000 and 0x1BFFF. Next we have to find the block with ID 0. This Block ID is at 0xFF4 in each block, so I would check 0xEFF4, 0xFFF4 ... 0x1BFF4 until I find ID 0. In my case I found ID 0 at 0x17FF4, so I know block 0 is a 0x17000 - 0x17FFF which means the final offset for the battle tower stats would be 0x17572 and 0x17570.

Hi, does anyone knows if there's any tool (NDS homebrew) available that allows modifications to the NDS RTC, without triggering the "anti time travel" feature that locks time events in Gen4 and Gen5 for 24h? I can do this with Gen3 using either a GBA homebrew in EverdriveGBA or a NDS homebrew for original Gen3 carts. I can also do this in 3DS using GodMode9 for 3DS Gen6 and Gen7 games. But I never found a tool that actually do this for NDS RTC, the Gen4 and Gen5. That would be a NDS homebrew for R4 carts. Thx!

Another update! Changelog: v1.2.0 - September 23, 2019 (Updated by DeadSkullzJr) - Tweaked some of the text - Added the homebrew application version number to the title in the menu. RTCChanger NDS (v1.2.0).7z

v1.1.1 - Fixed the day roll over when it is a leap year in February. RTCChanger NDS (v1.1.1).7z

Did a small update to the homebrew application. Also created an RTCChanger plugin icon for the SuperCard DSTWO. Changelog: v1.1.0 - September 22, 2019 (Updated by DeadSkullzJr) - Added a new homebrew icon - Added a new homebrew description RTCChanger NDS (v1.1.0).7z RTCChanger NDS Plugin Icon (v1.0).7z

As nobody seems to know of any tool around, I decided to create one myself. I've used the "GBA rtcread" tool as base code for GUI, so if you used that tool before, you should be familiar with it. Just be advised that you are responsible to sync the "week day" value too when changing the Date. I was able to successfully do in-game events without penalties, like growing berries by changing time in increments of 4 hours, and saving again. This tool changes the RTC without modifying the "RTC Offset" data in the firmware, so games cannot detect time changes. Source code is included. RTCChangerNDS.zip