Disable baudrate bootloader reset for ZBT-2 (home-assistant#153443)

Author: puddly

homeassistant/components/homeassistant_connect_zbt2/config_flow.py

@@ -67,11 +67,7 @@ class ZBT2FirmwareMixin(ConfigEntryBaseFlow, FirmwareInstallFlowProtocol):
     """Mixin for Home Assistant Connect ZBT-2 firmware methods."""
 
     context: ConfigFlowContext
-
-    # `rts_dtr` targets older adapters, `baudrate` works for newer ones. The reason we
-    # try them in this order is that on older adapters `baudrate` entered the ESP32-S3
-    # bootloader instead of the MG24 bootloader.
-    BOOTLOADER_RESET_METHODS = [ResetTarget.RTS_DTR, ResetTarget.BAUDRATE]
+    BOOTLOADER_RESET_METHODS = [ResetTarget.RTS_DTR]
 
     async def async_step_install_zigbee_firmware(
         self, user_input: dict[str, Any] | None = None

homeassistant/components/homeassistant_connect_zbt2/update.py

@@ -157,7 +157,7 @@ async def async_setup_entry(
 class FirmwareUpdateEntity(BaseFirmwareUpdateEntity):
     """Connect ZBT-2 firmware update entity."""
 
-    bootloader_reset_methods = [ResetTarget.RTS_DTR, ResetTarget.BAUDRATE]
+    bootloader_reset_methods = [ResetTarget.RTS_DTR]
 
     def __init__(
         self,

tests/components/homeassistant_connect_zbt2/test_config_flow.py

@@ -328,10 +328,7 @@ async def test_options_flow(
 
     # Verify async_flash_silabs_firmware was called with ZBT-2's reset methods
     assert flash_mock.call_count == 1
-    assert flash_mock.mock_calls[0].kwargs["bootloader_reset_methods"] == [
-        "rts_dtr",
-        "baudrate",
-    ]
+    assert flash_mock.mock_calls[0].kwargs["bootloader_reset_methods"] == ["rts_dtr"]
 
 
 async def test_duplicate_discovery(hass: HomeAssistant) -> None: