While the specific file name SD.GUNDAM.BATTLE.ALLIANCE.v1.30.part2.rar refers to a split-archive part for downloading , the "solid piece" of information you are likely looking for is the massive overhaul introduced in Update Version 1.30 .
: The "Stagger effect" for All-Rounders was increased, making it much easier to down massive Mobile Armor (MA) enemies by targeting specific body parts. New Content & Fixes SD.GUNDAM.BATTLE.ALLIANCE.v1.30.part2.rar
This patch significantly buffed the class to make it competitive with specialized Fighters and Sharpshooters: While the specific file name SD
: All-Rounders now carry a base of 5 repair kits instead of 3. SD.GUNDAM.BATTLE.ALLIANCE.v1.30.part2.rar
: New challenges were added, though some players noted the arenas in these new missions could be cramped with camera-obstructing obstacles.