diff --git a/.github/workflows/quamba-ci.yml b/.github/workflows/quamba-ci.yml
index 1bc40f5..d749bf9 100755
--- a/.github/workflows/quamba-ci.yml
+++ b/.github/workflows/quamba-ci.yml
@@ -112,11 +112,11 @@ jobs:
         python generate.py state-spaces/mamba2-130m --prompt "My cat wrote all this CUDA code for a new language model and" --topp 0.9 --temperature 0.7 --repetition_penalty 1.2 --cache_graph --pretrained_dir pretrained_models/ --quantize --quantize_embedding --quantize_lm_head --w_bits 4 --a_bits 8  --apply_gptq --group_heads
         python generate.py state-spaces/mamba2-130m --prompt "My cat wrote all this CUDA code for a new language model and" --topp 0.9 --temperature 0.7 --repetition_penalty 1.2 --cache_graph --pretrained_dir pretrained_models/ --quantize --quantize_embedding --quantize_lm_head --w_bits 4 --a_bits 16 --apply_gptq
     # test generate.py with w4ax hybrid model and store w4ax hybrid models
-    # we hack and apply the mamba2-8B hybrid config (searched_1400_v3.json) to state-spaces/mamba2-130m
-    # - name: Test w4ax hybrid generate.py
-    #   run: |
-    #     export CUDA_VISIBLE_DEVICES=7
-    #     python generate.py state-spaces/mamba2-130m --prompt "My cat wrote all this CUDA code for a new language model and" --topp 0.9 --temperature 0.7 --repetition_penalty 1.2 --cache_graph --pretrained_dir pretrained_models/ --quantize --quantize_embedding --quantize_lm_head --w_bits 4 --apply_gptq --group_heads --hybrid_blocks --hybrid_blocks_config configs/hybrid/mamba2-8b/searched_1400_v3.json
+    # we hack and apply the mamba2-8B hybrid config (hybrid_blocks_config.json) to state-spaces/mamba2-130m
+    - name: Test w4ax hybrid generate.py
+      run: |
+        export CUDA_VISIBLE_DEVICES=7
+        python generate.py state-spaces/mamba2-130m --prompt "My cat wrote all this CUDA code for a new language model and" --topp 0.9 --temperature 0.7 --repetition_penalty 1.2 --cache_graph --pretrained_dir pretrained_models/ --quantize --quantize_embedding --quantize_lm_head --w_bits 4 --apply_gptq --group_heads --hybrid_blocks --hybrid_blocks_config configs/hybrid/mamba2-8b/hybrid_blocks_config.json 
 
     # test loading the stored quantized models with generate.py
     - name: Test loading quantized models
@@ -129,11 +129,11 @@ jobs:
         python generate.py ut-enyac/quamba2-130m-w4a8  --prompt "My cat wrote all this CUDA code for a new language model and" --topp 0.9 --temperature 0.7 --repetition_penalty 1.2 --cache_graph --pretrained_dir pretrained_models/
         python generate.py ut-enyac/quamba2-130m-w4a16 --prompt "My cat wrote all this CUDA code for a new language model and" --topp 0.9 --temperature 0.7 --repetition_penalty 1.2 --cache_graph --pretrained_dir pretrained_models/
     # test loading the stored w4ax hybrid model with generate.py
-    # we hack and apply the mamba2-8B hybrid config (searched_1400_v3.json) to state-spaces/mamba2-130m
-    # - name: Test loading w4ax hybrid generate.py
-    #   run: |
-    #     export CUDA_VISIBLE_DEVICES=7
-    #     python generate.py ut-enyac/quamba2-130m-w4aX-searched_1400_v3 --prompt "My cat wrote all this CUDA code for a new language model and" --topp 0.9 --temperature 0.7 --repetition_penalty 1.2 --cache_graph --pretrained_dir pretrained_models/
+    # we hack and apply the mamba2-8B hybrid config (hybrid_blocks_config.json) to state-spaces/mamba2-130m
+    - name: Test loading w4ax hybrid generate.py
+      run: |
+        export CUDA_VISIBLE_DEVICES=7
+        python generate.py ut-enyac/quamba2-130m-w4aX-hybrid_blocks_config --prompt "My cat wrote all this CUDA code for a new language model and" --topp 0.9 --temperature 0.7 --repetition_penalty 1.2 --cache_graph --pretrained_dir pretrained_models/
     - name: Clean up pretrained models
       run: |
         rm -rf pretrained_models/ut-enyac/*
\ No newline at end of file
diff --git a/README.md b/README.md
index f625163..f212b77 100755
--- a/README.md
+++ b/README.md
@@ -33,7 +33,7 @@
 
 ### Clone Quamba
 - Clone the repository with all submodules:
-```
+```bash
 git clone --recurse-submodules git@github.com:enyac-group/Quamba.git
 # or
 cd Quamba
@@ -43,19 +43,19 @@ git submodule update --init --recursive
 - Run in docker (optional)
 
 To build the docker image with customized kernels, run the following commands:
-```
+```bash
 cd docker
 ./build_docker.sh
 ./run.sh # launch the container
 ```
 
 Or Pull the pre-built docker image by
-```
+```bash
 docker image pull hychiang/quamba-cuda-12.1:latest
 ```
 
 - Create Quamba conda environment
-```
+```bash
 cd Quamba
 conda create -n quamba python=3.10
 conda activate quamba
@@ -65,40 +65,40 @@ pip install -r requirements.txt
 ### Build 3rd-party Libraries
 
 - Install `fast-hadamard-transform`:
-```
+```bash
 # set force build to include 12N, 40N from the newer commit
 export FAST_HADAMARD_TRANSFORM_FORCE_BUILD=TRUE
 pip install 3rdparty/fast-hadamard-transform
 ```
 
 - Install `lm-evaluation-harness`:
-```
+```bash
 # lm_eval-0.4.2 word2number-1.1
 pip install 3rdparty/lm-evaluation-harness
 ``````
 
 - Install mamba
-```
+```bash
 # set force build to use the commit for Quamba
 export MAMBA_FORCE_BUILD=TRUE
 pip install 3rdparty/mamba
 ```
 
 - Install CUTLASS
-```
+```bash
 # cmake version >= 3.22.1
 bash build_cutlass.sh
 ```
 
 - Install Megatron-LM
-```
+```bash
 pip install -e 3rdparty/Megatron-LM
 # Not sure why Megatron-LM will force to install pytorch 2.6.0+cu124
 # , so run `pip install -r requirements.txt` again if necessary
 ```
 
 ### Build Quamba
-```
+```bash
 pip install .
 ```
 
@@ -106,24 +106,24 @@ pip install .
 | Models    | W8A8     |  W4A8       |  W4A16  |  W4AX |
 | --------- | ---------|-------------|--------------|------|
 | [Mamba1](https://huggingface.co/collections/ut-enyac/quamba-67edf67881154f4a12e41cb3)    | ✅  |  ✅ | ✅ | - |
-| [Mamba2](https://huggingface.co/collections/ut-enyac/quamba2-67edf74a0880f7fba8438cc3)    | ✅  |  ✅ | ✅ | TBD |
+| [Mamba2](https://huggingface.co/collections/ut-enyac/quamba2-67edf74a0880f7fba8438cc3)    | ✅  |  ✅ | ✅ | 8B |
 
 ✅ : support all sizes, *e.g*, Mamba2 130m/370m/780m/1.3b/2.7b/8b
 
 ## Download Models
-```
+```bash
 # huggingface-cli download ut-enyac/quamba2-{size}-{precision}  --local-dir pretrained_models/ut-enyac/quamba2-{size}-{precision}
 huggingface-cli download ut-enyac/quamba2-2.7b-w4a8  --local-dir pretrained_models/ut-enyac/quamba2-2.7b-w4a8
 ```
 
 ## Generate
 
-```
+```bash
 python generate.py ut-enyac/quamba2-2.7b-w4a8 --prompt "My cat wrote all this CUDA code for a new language model and" --topp 0.9 --temperature 0.7 --repetition_penalty 1.2 --quantize --cache_graph --pretrained_dir pretrained_models
 ```
 
 ## Evaluate
-```
+```bash
 bash eval.sh ut-enyac/quamba2-2.7b-w4a8
 ```
 
@@ -131,28 +131,28 @@ bash eval.sh ut-enyac/quamba2-2.7b-w4a8
 ## Profile latency and memory
 
 - To profile model size, use `--size`:
-```
+```bash
 python profile_mamba.py ut-enyac/quamba2-2.7b-w4a8 --prompt_len 512 --size --pretrained_dir pretrained_models
 ```
 
 - To profile time-to-first-token (prefilling stage), use `--ttft`:
-```
+```bash
 python profile_mamba.py ut-enyac/quamba2-2.7b-w4a8 --prompt_len 512 --ttft --pretrained_dir pretrained_models
 ```
 
 - To profile time-per-output-token (generation stage), use `--tpot --cache_graph`:
-```
+```bash
 python profile_mamba.py ut-enyac/quamba2-2.7b-w4a8 --tpot --cache_graph --pretrained_dir pretrained_models
 ```
 
 - To profile time-to-last-token (prefilling + generation stage), use `--ttlt --cache_graph`:
-```
+```bash
 python profile_mamba.py ut-enyac/quamba2-2.7b-w4a8 --prompt_len 512 --gen_len 512 --ttlt --cache_graph --pretrained_dir pretrained_models
 ```
 
 ## Chat (Mamba1 Only)
 
-```
+```bash
 huggingface-cli download ut-enyac/quamba-chat-w4a8  --local-dir pretrained_models/ut-enyac/quamba-chat-w4a8 
 python chat.py ut-enyac/quamba-chat-w4a8 --cache_graph --pretrained_dir ./pretrained_models
 ```
@@ -160,7 +160,7 @@ python chat.py ut-enyac/quamba-chat-w4a8 --cache_graph --pretrained_dir ./pretra
 ## Mamba2-8B
 
 **[TL;DR]** We provide the 8B model in all precision formats on Hugging Face. To use it, run:
-```
+```bash
 huggingface-cli download ut-enyac/quamba2-8b-converted-w4a8  --local-dir pretrained_models/ut-enyac/quamba2-8b-converted-w4a8
 python main.py ut-enyac/quamba2-8b-converted-w4a8 \
 --batch_size 16 \
@@ -173,11 +173,11 @@ python main.py ut-enyac/quamba2-8b-converted-w4a8 \
 ### Convert Nvidia Mamba2-8B to HuggingFace
 
 Download the checkpoint using `huggingface-cli`
-```
+```bash
 huggingface-cli download nvidia/mamba2-8b-3t-4k --local-dir ./pretrained_models/mamba2-8b-3t-4k
 ```
 After downloading, you will have the directory `./pretrained_models/mamba2-8b-3t-4k` having a structure like this
-```
+```bash
 ├── latest_checkpointed_iteration.txt
 ├── mt_nlg_plus_multilingual_ja_zh_the_stack_frac_015_256k.model (This is tokenizer)
 ├── README.md
@@ -186,7 +186,7 @@ After downloading, you will have the directory `./pretrained_models/mamba2-8b-3t
         └── model_optim_rng.pt (This is weights)
 ```
 + Run the conversion scripts to get the model directory
-```
+```bash
 python convert_mamba2_8b_to_hf.py \
 ./pretrained_models/mamba2-8b-3t-4k/release/mp_rank_00/model_optim_rng.pt \
 ./pretrained_models/mamba2-8b-3t-4k/mt_nlg_plus_multilingual_ja_zh_the_stack_frac_015_256k.model \
@@ -198,7 +198,8 @@ python convert_mamba2_8b_to_hf.py \
 After running, you will see a directory called `mamba2-8b-converted` has been created. Then you can run it with evaluation, profiling as the instructions above. However, it requires at least *24GB* memory on the GPU to quantize the Mamba2-8b model.
 
 For example:
-```
+```bash
+# use the `--pretrained_dir` flag to store the quantized model
 python main.py pretrained_models/mamba2-8b-converted \
 --batch_size 16 \
 --eval_zero_shot \
@@ -214,13 +215,46 @@ python main.py pretrained_models/mamba2-8b-converted \
 --log_dir logs
 ``` 
 
+# Run Mixed-precision Quamba2-8B-W4AX
+**[TL;DR]** We provide the W4AX 8B model on Hugging Face. To use it, run:
+```bash
+huggingface-cli download ut-enyac/quamba2-8b-converted-w4aX  --local-dir pretrained_models/ut-enyac/quamba2-8b-converted-w4aX
+python main.py ut-enyac/quamba2-8b-converted-w4aX \
+--batch_size 16 \
+--eval_zero_shot \
+--task_list lambada_openai \
+--pretrained_dir ./pretrained_models \
+--log_dir logs
+```
+
+### Quantize and Evaluate Qamba2-8B-W4AX
+Follow the previous steps to convert the Mamba2-8B first, and then run
+```bash
+# use the `--pretrained_dir` flag to store the quantized model
+# it will store the mixed-precision model with the name 
+# ut-enyac/mamba2-8b-converted-w4aX-hybrid_blocks_config
+python main.py pretrained_models/mamba2-8b-converted \
+--batch_size 16 \
+--eval_zero_shot \
+--task_list lambada_openai \
+--quantize \
+--group_heads \
+--apply_gptq \
+--quantize_embedding \
+--quantize_lm_head \
+--w_bits 4 \
+--hybrid_blocks \
+--hybrid_blocks_config configs/hybrid/mamba2-8b/hybrid_blocks_config.json \
+--pretrained_dir ./pretrained_models \
+--log_dir logs
+```
 
 ## Citation
 ```
 @article{chiang2025quamba2,
   title={Quamba2: A Robust and Scalable Post-training Quantization Framework for Selective State Space Models},
   author={Chiang, Hung-Yueh and Chang, Chi-Chih and Frumkin, Natalia and Wu, Kai-Chiang, Abdelfattah, Mohamed S.  and Marculescu, Diana},
-  journal={arXiv preprint arXiv:2503.22879},
+  journal={International Conference on Machine Learning (ICML)},
   year={2025}
 }
 @inproceedings{chiang2025quamba,
diff --git a/configs/hybrid/mamba2-8b/hybrid_blocks_config.json b/configs/hybrid/mamba2-8b/hybrid_blocks_config.json
new file mode 100644
index 0000000..8052252
--- /dev/null
+++ b/configs/hybrid/mamba2-8b/hybrid_blocks_config.json
@@ -0,0 +1 @@
+["W4A16", "W4A8", "W4A8", "W4A8", "W4A16", "W4A16", "W4A8", "W4A8", "W4A8", "W4A16", "W4A16", "W4A8", "W4A8", "W4A8", "W4A8", "W4A8", "W4A8", "W4A16", "W4A8", "W4A8", "W4A8", "W4A16", "W4A16", "W4A8", "W4A8", "W4A8", "W4A8", "W4A8", "W4A16", "W4A8", "W4A8", "W4A8", "W4A8", "W4A16", "W4A8", "W4A16", "W4A8", "W4A8", "W4A8", "W4A8", "W4A8", "W4A8", "W4A8", "W4A8", "W4A8", "W4A8", "W4A8", "W4A8", "W4A16", "W4A16", "W4A8", "W4A8", "W4A8", "W4A8", "W4A16", "W4A8"]
\ No newline at end of file