diff --git a/lib/logitech_receiver/device.py b/lib/logitech_receiver/device.py
index e400c17e..8c0fdde8 100644
--- a/lib/logitech_receiver/device.py
+++ b/lib/logitech_receiver/device.py
@@ -315,8 +315,8 @@ class Device:
         hw_info = _hidpp20.get_hardware_info_centurion(self)
         if hw_info:
             model_id, hw_revision, product_id = hw_info
-            # modelId is the stable per-model disambiguator (G522 0x33, G325
-            # 0x45). productId is shared across the headset family and varies
+            # modelId is the stable per-model disambiguator (G522 0x32, G325
+            # 0x44). productId is shared across the headset family and varies
             # by firmware (G522 0x0508 -> 0x0509), so it must NOT key modelId.
             self._modelId = f"{model_id:02X}"
             self._tid_map = {"usbid": f"{product_id:04X}"}
diff --git a/lib/logitech_receiver/device_quirks.py b/lib/logitech_receiver/device_quirks.py
index 30cb2018..e2c09009 100644
--- a/lib/logitech_receiver/device_quirks.py
+++ b/lib/logitech_receiver/device_quirks.py
@@ -3,7 +3,7 @@
 Keyed by ``device.modelId``. For normal HID++ devices that is the string
 Logitech composes by concatenating every transport PID (btid + btleid + wpid
 + usbid) — one entry covers the model on any transport. For Centurion
-headsets it is the firmware-stable model byte (G522 ``"33"``, G325 ``"45"``);
+headsets it is the firmware-stable model byte (G522 ``"32"``, G325 ``"44"``);
 see ``device._get_ids_centurion``.
 
 Two postures, by feature class:
@@ -56,12 +56,13 @@ RGB_EFFECTS_NVCONFIG_ALLOWED: dict[str, dict[int, set[str]]] = {
 # fields the firmware is KNOWN to honor. An unlisted effect_id or model
 # suppresses that signature-effect setting entirely.
 HEADSET_SIGNATURE_EFFECTS_ALLOWED: dict[str, dict[int, set[str]]] = {
-    # G522 LIGHTSPEED (Centurion model byte 0x33). Verified against user
+    # G522 LIGHTSPEED (Centurion model byte 0x32, from DeviceInfo func 0;
+    # confirmed against multiple diagnostic logs). Verified against user
     # reports: startup honors only the primary color (secondary unused, speed
     # has no effect); shutdown honors both colors (speed has no effect). The
     # passive slot (effect_id 2) is omitted — its behavior is not understood,
     # so the whole passive setting is suppressed.
-    "33": {
+    "32": {
         0: {"color1"},
         1: {"color1", "color2"},
     },