Pokemon Brilliant Diamond 1.3.0 Update -

It is important to clarify right away what the 1.3.0 update actually is. Unlike games like Splatoon or Animal Crossing, where updates add new content, the 1.3.0 update for Pokémon Brilliant Diamond and Shining Pearl is strictly a stability patch.

Released in March 2022, this update did not add new Pokémon, new areas, or new story elements. Instead, it was released to prepare the game for the "Daybreak" DLC and to fix several lingering bugs.

Here is a complete review of the 1.3.0 update, analyzing what it fixed, what it broke, and the state of the game in its final form.

Duplication Glitch Patch

The "box swap" dupe glitch (using the Pokémon Storage System and moving at the exact frame of saving) was finally eradicated. Post-1.3.0, attempting the exploit causes the game to auto-save on exit from the PC, creating a rollback prevention. pokemon brilliant diamond 1.3.0 update

Key Changes in 1.3.0

1. Union Room Overhaul (The Biggest Fix)
The most user-facing change: players can now link up with anyone via local or online without needing to be in the same “room code” session in a clunky menu. The update streamlined the Union Room interface, cutting lag when entering/exiting and fixing desyncs that plagued multiplayer battles and trades. For fans of the Underground’s secret bases, this also meant smoother co-op digging for spheres and fossils.

2. Pokémon Home Compatibility (The Real Headline)
While technically launched just before 1.3.0, this patch cemented full Pokémon HOME integration—allowing transfers from Legends: Arceus, Sword/Shield, and GO. Suddenly, the limited Sinnoh Pokédex expanded. You could finally bring in Hisuian forms (like Hisuian Growlithe and Zoroark) into Sinnoh, though they weren’t usable in the main story until post-game. This made competitive breeding and shiny hunting far more viable.

3. Battle-Ready Fixes for VGC
Several moves and abilities got subtle backend tweaks: It is important to clarify right away what the 1

• Bug Fix: Psycho Cut now correctly checks accuracy.
• Ability correction: Guts now properly activates when burned without the attack drop glitch.
• Item fix: Flame Orb and Toxic Orb no longer trigger twice on switch-in.
  These changes aligned BDSP more closely with Sword/Shield’s battle mechanics, though the game still lacked official VGC support.

4. Ramanas Park Adjustments
Slates for legendary encounters (Ho-Oh, Lugia, etc.) now have a slightly higher drop rate from digging in the Grand Underground. Also, a soft-lock was removed where leaving the park while a legendary was mid-battle could freeze the game.

5. Minor Quality of Life

• The Pokétch’s Daycare Checker now updates in real time without needing to re-open the app.
• Berry growth timers no longer reset when switching between local and internet time.

1. Executive Summary

The Version 1.3.0 update for Pokémon Brilliant Diamond (and its counterpart, Pokémon Shining Pearl) represents a significant milestone in the post-launch lifecycle of the titles. Released on March 15, 2022, this patch was highly anticipated by the community due to the inclusion of the "Grand Underground" Pokémon Hideaways and several quality-of-life adjustments. This paper outlines the key features, technical changes, and gameplay impacts introduced in this update. Duplication Glitch Patch The "box swap" dupe glitch

Manaphy & Phione (Existing Eggs)

• These were from the early 1.1.0 patch, but 1.3.0 ensured that Manaphy’s Egg (from the early purchase bonus) no longer caused save corruption when hatched in certain Union Room states.

Overview

Add a content update focused on reconnecting players with Sinnoh post-game, new endgame activities, quality-of-life improvements, and online features that deepen replayability without altering core balance.

What is the Colosseum Battle Test?

It’s a local and online matchmaking lobby with three formats:

• Single Battle (Level 50)
• Double Battle (Level 50)
• Single Battle (Free Rules – Level 100 allowed)

The biggest addition? Team Preview. Prior to 1.3.0, BDSP had no true competitive ladder system (unlike Sword/Shield). While this update didn’t add a ranked ladder, it did enable:

• Flat rules (Level 50 with restrictions on duplicate items)
• Self-destruct clause (soft implemented via code)
• Stability fixes for disconnections (reconnect logic improved)

For casual competitive players, the Colosseum Battle Test became the de facto "battle tower alternative" for testing teams without climbing the Tower’s 49-win streak.

5. Impact on the Competitive Meta

While the 1.3.0 update did not change base stats or abilities, it democratized the competitive meta.

• Accessibility of Hidden Abilities: The update made Pokémon with Hidden Abilities more accessible in the Grand Underground.
• Breeding Material: Players could now catch fully evolved Pokémon from other regions with decent Individual Values (IVs) to use for breeding, significantly lowering the barrier to entry for building a competitive team without relying on third-party tools or extensive trading.