diff --git a/mim/commands/install.py b/mim/commands/install.py
index 717a8a3..b4951cf 100644
--- a/mim/commands/install.py
+++ b/mim/commands/install.py
@@ -170,10 +170,6 @@ def get_mmcv_full_find_link(mmcv_base_url: str) -> str:
     if device == 'cuda' and device_v.isdigit():
         device_link = f'cu{device_v}'
     elif device == 'ascend':
-        if not device_v.isdigit():
-            exit_with_error('Unable to install OpenMMLab projects via mim '
-                            'on the current Ascend NPU, '
-                            'please compile from source code to install.')
         device_link = f'ascend{device_v}'
     else:
         device_link = 'cpu'
diff --git a/mim/utils/utils.py b/mim/utils/utils.py
index f62c32f..f8c41e1 100644
--- a/mim/utils/utils.py
+++ b/mim/utils/utils.py
@@ -353,7 +353,7 @@ def get_npu_version() -> str:
                 'installing OpenMMLab projects on Ascend NPU.'
                 "Please run 'source set_env.sh' in the CANN installation path."
             ))
-    npu_version = torch_npu.get_cann_version(ascend_home_path)
+    npu_version = torch_npu.get_cann_version(ascend_home_path).lower()
     return npu_version
 
 
diff --git a/tests/test_utils.py b/tests/test_utils.py
index a30b1f9..88a749c 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -45,7 +45,6 @@ def test_get_torch_device_version():
     assert torch_v.replace('.', '').isdigit()
     if is_npu_available():
         assert device == 'ascend'
-        assert device_v.replace('.', '').isdigit()
 
 
 def teardown_module():