If you use a link cable emulator (like VBALink or Parsec for co-op), this ROM does not desync. The USquirrels patch fixed the "Trade Machine freeze" that plagued the initial scene releases. You can finally get Golem, Alakazam, and Machamp without cheats.
18;write_to_target_document1a;_zAjuaZmTKamKwbkPwtSNsAU_20;56; 0;10e4;0;904; 1635 - Pokemon Fire Red (U)(Squirrels) 1635 pokemon fire red usquirrelsgba rom best