diff --git a/pyproject.toml b/pyproject.toml
index 7fb572b735..523794ee1a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -550,6 +550,48 @@ cu128-ampere-torch270 = [
     "unsloth[flashattention]",
 ]
 
+flashattentiontorch260abiFALSEcu12x = [
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.6cxx11abiFALSE-cp39-cp39-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.9'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.6cxx11abiFALSE-cp310-cp310-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.10'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.6cxx11abiFALSE-cp311-cp311-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.11'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.6cxx11abiFALSE-cp312-cp312-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.12'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.6cxx11abiFALSE-cp313-cp313-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.13'",
+]
+flashattentiontorch260abiTRUEcu12x = [
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.6cxx11abiTRUE-cp39-cp39-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.9'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.6cxx11abiTRUE-cp310-cp310-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.10'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.6cxx11abiTRUE-cp311-cp311-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.11'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.6cxx11abiTRUE-cp312-cp312-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.12'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.6cxx11abiTRUE-cp313-cp313-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.13'",
+]
+flashattentiontorch250abiFALSEcu12x = [
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.5cxx11abiFALSE-cp39-cp39-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.9'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.5cxx11abiFALSE-cp310-cp310-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.10'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.5cxx11abiFALSE-cp311-cp311-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.11'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.5cxx11abiFALSE-cp312-cp312-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.12'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.5cxx11abiFALSE-cp313-cp313-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.13'",
+]
+flashattentiontorch250abiTRUEcu12x = [
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.5cxx11abiTRUE-cp39-cp39-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.9'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.5cxx11abiTRUE-cp310-cp310-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.10'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.5cxx11abiTRUE-cp311-cp311-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.11'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.5cxx11abiTRUE-cp312-cp312-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.12'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.5cxx11abiTRUE-cp313-cp313-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.13'",
+]
+flashattentiontorch240abiFALSEcu12x = [
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.4cxx11abiFALSE-cp39-cp39-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.9'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.4cxx11abiFALSE-cp310-cp310-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.10'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.4cxx11abiFALSE-cp311-cp311-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.11'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.4cxx11abiFALSE-cp312-cp312-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.12'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.4cxx11abiFALSE-cp313-cp313-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.13'",
+]
+flashattentiontorch240abiTRUEcu12x = [
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.4cxx11abiTRUE-cp39-cp39-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.9'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.4cxx11abiTRUE-cp310-cp310-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.10'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.4cxx11abiTRUE-cp311-cp311-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.11'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.4cxx11abiTRUE-cp312-cp312-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.12'",
+    "flash-attn @ https://github.com/Dao-AILab/flash-attention/releases/download/v2.7.4.post1/flash_attn-2.7.4.post1+cu12torch2.4cxx11abiTRUE-cp313-cp313-linux_x86_64.whl ; platform_system == 'Linux' and python_version == '3.13'",
+]
 intel-gpu-torch260 = [
     "unsloth[huggingface]",
 
diff --git a/unsloth/_auto_install.py b/unsloth/_auto_install.py
index 308bf075e9..c8559394ed 100644
--- a/unsloth/_auto_install.py
+++ b/unsloth/_auto_install.py
@@ -18,7 +18,9 @@ from packaging.version import Version as V
 v = V(torch.__version__)
 cuda = str(torch.version.cuda)
 is_ampere = torch.cuda.get_device_capability()[0] >= 8
-if cuda != "12.1" and cuda != "11.8" and cuda != "12.4" and cuda != "12.6" and cuda != "12.8": raise RuntimeError(f"CUDA = {cuda} not supported!")
+USE_ABI = torch._C._GLIBCXX_USE_CXX11_ABI
+if cuda not in ("11.8", "12.1", "12.4", "12.6", "12.8"):
+	raise RuntimeError(f"CUDA = {cuda} not supported!")
 if   v <= V('2.1.0'): raise RuntimeError(f"Torch = {v} too old!")
 elif v <= V('2.1.1'): x = 'cu{}{}-torch211'
 elif v <= V('2.1.2'): x = 'cu{}{}-torch212'