update README: reorder FlagOS and model download steps

README.md

@@ -72,17 +72,17 @@ FlagEval (Libra)** is a comprehensive evaluation system and open platform for la
 
 ## Operation Steps
 
-### Download Open-source Model Weights
+### Download FlagOS Image
 
 ```python
-pip install modelscope
-modelscope download --model FlagRelease/RoboBrain2.0-7B-FlagOS --local_dir /data/RoboBrain2.0-7B
+docker pull harbor.baai.ac.cn/flagrelease-public/flagrelease-nvidia-release-model_robobrain2.0-7b-tree_none-gems_2.2-scale_0.6.0-cx_none-python_3.10.12-torch_2.6.0-pcp_cuda12.6-gpu_nvidia004-arc_amd64-driver_535.183.06:2508011526
 ```
 
-### Download FlagOS Image
+### Download Open-source Model Weights
 
 ```python
-docker pull harbor.baai.ac.cn/flagrelease-public/flagrelease-nvidia-release-model_robobrain2.0-7b-tree_none-gems_2.2-scale_0.6.0-cx_none-python_3.10.12-torch_2.6.0-pcp_cuda12.6-gpu_nvidia004-arc_amd64-driver_535.183.06:2508011526
+pip install modelscope
+modelscope download --model FlagRelease/RoboBrain2.0-7B-FlagOS --local_dir /data/RoboBrain2.0-7B
 ```
 
 ### Start the inference service
@@ -186,7 +186,6 @@ We warmly welcome global developers to join us:
 3. Improve technical documentation
 4. Expand hardware adaptation support
 
-
 # License
 
 本模型的权重来源于https://huggingface.co/BAAI/RoboBrain2.0-7B， 以apache2.0协议https://www.apache.org/licenses/LICENSE-2.0.txt开源。