diff --git a/Main.py b/Main.py
index 32e33a97..4ef4398c 100644
--- a/Main.py
+++ b/Main.py
@@ -19,7 +19,7 @@ from Dungeons import create_dungeons, fill_dungeons, fill_dungeons_restrictive
 from Fill import distribute_items_cutoff, distribute_items_staleness, distribute_items_restrictive, flood_items, \
     balance_multiworld_progression
 from ItemList import generate_itempool, difficulties, fill_prizes
-from Utils import output_path, parse_player_names, get_options, __version__
+from Utils import output_path, parse_player_names, get_options, __version__, _version_tuple
 import Patch
 
 seeddigits = 20
@@ -228,7 +228,7 @@ def main(args, seed=None):
         rom.write_to_file(rompath)
         if args.create_diff:
             Patch.create_patch_file(rompath)
-        return (player, team, list(rom.name))
+        return player, team, bytes(rom.name).decode()
 
     if not args.suppress_rom:
         import concurrent.futures
@@ -273,7 +273,8 @@ def main(args, seed=None):
                                                             type(location.address) is int],
                                               "server_options": get_options()["server_options"],
                                               "er_hint_data": er_hint_data,
-                                              "precollected_items": precollected_items
+                                              "precollected_items": precollected_items,
+                                              "version": _version_tuple
                                               }).encode("utf-8"), 9)
 
         with open(output_path('%s.multidata' % outfilebase), 'wb') as f:
diff --git a/MultiClient.py b/MultiClient.py
index 422fcaac..08de0110 100644
--- a/MultiClient.py
+++ b/MultiClient.py
@@ -800,7 +800,7 @@ async def process_server_cmd(ctx: Context, cmd, args):
                 'Invalid ROM detected, please verify that you have loaded the correct rom and reconnect your snes (/snes)')
         if 'SlotAlreadyTaken' in args:
             Utils.persistent_store("servers", "default", ctx.server_address)
-            Utils.persistent_store("servers", "".join(chr(x) for x in ctx.rom), ctx.server_address)
+            Utils.persistent_store("servers", ctx.rom, ctx.server_address)
             raise Exception('Player slot already in use for that team')
         if 'IncompatibleVersion' in args:
             raise Exception('Server reported your client version as incompatible')
@@ -808,7 +808,7 @@ async def process_server_cmd(ctx: Context, cmd, args):
 
     elif cmd == 'Connected':
         Utils.persistent_store("servers", "default", ctx.server_address)
-        Utils.persistent_store("servers", "".join(chr(x) for x in ctx.rom), ctx.server_address)
+        Utils.persistent_store("servers", ctx.rom, ctx.server_address)
         ctx.team, ctx.slot = args[0]
         ctx.player_names = {p: n for p, n in args[1]}
         msgs = []
@@ -922,7 +922,7 @@ async def server_auth(ctx: Context, password_requested):
         ctx.ui_node.log_info('No ROM detected, awaiting snes connection to authenticate to the multiworld server (/snes)')
         return
     ctx.awaiting_rom = False
-    ctx.auth = ctx.rom.copy()
+    ctx.auth = ctx.rom if ctx.server_version > (2, 4, 0) else list(bytes(ctx.rom))
     await ctx.send_msgs([['Connect', {
         'password': ctx.password, 'rom': ctx.auth, 'version': Utils._version_tuple, 'tags': get_tags(ctx),
         'uuid': Utils.get_unique_identifier()
@@ -1147,11 +1147,11 @@ async def game_watcher(ctx : Context):
             if rom is None or rom == bytes([0] * ROMNAME_SIZE):
                 continue
 
-            ctx.rom = list(rom)
+            ctx.rom = rom.decode()
             if not ctx.prev_rom or ctx.prev_rom != ctx.rom:
                 ctx.locations_checked = set()
                 ctx.locations_scouted = set()
-            ctx.prev_rom = ctx.rom.copy()
+            ctx.prev_rom = ctx.rom
 
             if ctx.awaiting_rom:
                 await server_auth(ctx, False)
diff --git a/MultiServer.py b/MultiServer.py
index be003177..8202992d 100644
--- a/MultiServer.py
+++ b/MultiServer.py
@@ -111,7 +111,12 @@ class Context(Node):
         for team, names in enumerate(jsonobj['names']):
             for player, name in enumerate(names, 1):
                 self.player_names[(team, player)] = name
-        self.rom_names = {tuple(rom): (team, slot) for slot, team, rom in jsonobj['roms']}
+        version = jsonobj.get("version", [1, 0, 0])
+        if version > [2, 4, 0]:
+            self.rom_names = {rom: (team, slot) for slot, team, rom in jsonobj['roms']}
+        else:
+            self.rom_names = {bytes(letter for letter in rom).decode(): (team, slot) for slot, team, rom in
+                              jsonobj['roms']}
         self.remote_items = set(jsonobj['remote_items'])
         self.locations = {tuple(k): tuple(v) for k, v in jsonobj['locations']}
         if "er_hint_data" in jsonobj:
@@ -206,8 +211,12 @@ class Context(Node):
     def set_save(self, savedata: dict):
         rom_names = savedata["rom_names"]
         received_items = {tuple(k): [ReceivedItem(*i) for i in v] for k, v in savedata["received_items"]}
-        if not all([self.rom_names[tuple(rom)] == (team, slot) for rom, (team, slot) in rom_names]):
-            raise Exception('Save file mismatch, will start a new game')
+
+        if rom_names != self.rom_names:
+            adjusted = {rom: (team, slot) for (rom, (team, slot)) in rom_names}
+            if self.rom_names != adjusted:
+                raise Exception('Save file mismatch, will start a new game')
+
         self.received_items = received_items
         self.hints_used.update({tuple(key): value for key, value in savedata["hints_used"]})
         if "hints" in savedata:
@@ -870,18 +879,20 @@ async def process_client_cmd(ctx: Context, client: Client, cmd, args):
     if cmd == 'Connect':
         if not args or type(args) is not dict or \
                 'password' not in args or type(args['password']) not in [str, type(None)] or \
-                'rom' not in args or type(args['rom']) is not list:
+                'rom' not in args or type(args['rom']) not in (list, str):
             await ctx.send_msgs(client, [['InvalidArguments', 'Connect']])
             return
 
         errors = set()
         if ctx.password is not None and args['password'] != ctx.password:
             errors.add('InvalidPassword')
+        if type(args["rom"]) == list:
+            args["rom"] = bytes(letter for letter in args["rom"]).decode()
 
-        if tuple(args['rom']) not in ctx.rom_names:
+        if args['rom'] not in ctx.rom_names:
             errors.add('InvalidRom')
         else:
-            team, slot = ctx.rom_names[tuple(args['rom'])]
+            team, slot = ctx.rom_names[args['rom']]
             # this can only ever be 0 or 1 elements
             clients = [c for c in ctx.endpoints if c.auth and c.slot == slot and c.team == team]
             if clients:
diff --git a/Rom.py b/Rom.py
index ed499f4b..a7f0d498 100644
--- a/Rom.py
+++ b/Rom.py
@@ -1282,7 +1282,7 @@ def patch_rom(world, rom, player, team, enemized):
     # set rom name
     # 21 bytes
     from Main import __version__
-    rom.name = bytearray(f'ER{__version__.split("-")[0].replace(".","")[0:3]}_{team+1}_{player}_{world.seed:09}\0', 'utf8')[:21]
+    rom.name = bytearray(f'BM{__version__.replace(".", "")[0:3]}_{team + 1}_{player}_{world.seed:09}\0', 'utf8')[:21]
     rom.name.extend([0] * (21 - len(rom.name)))
     rom.write_bytes(0x7FC0, rom.name)
 
diff --git a/Utils.py b/Utils.py
index 8c90c9fe..8bb03c18 100644
--- a/Utils.py
+++ b/Utils.py
@@ -6,7 +6,7 @@ def tuplize_version(version: str) -> typing.Tuple[int, ...]:
     return tuple(int(piece, 10) for piece in version.split("."))
 
 
-__version__ = "2.4.0"
+__version__ = "2.4.1"
 _version_tuple = tuplize_version(__version__)
 
 import os