diff --git a/install.sh b/install.sh
index a770464a60..b77fa37020 100755
--- a/install.sh
+++ b/install.sh
@@ -257,12 +257,9 @@ run_install_cmd_retry() {
     done
 }
 
-# Install bitsandbytes on AMD ROCm hosts. Uses the continuous-release_main
-# wheel for the ROCm 4-bit GEMV fix (bnb PR #1887, post-0.49.2); bnb <= 0.49.2
-# NaNs at decode shape on every AMD GPU. Falls back to PyPI >=0.50.0 if the
-# pre-release URL is unreachable: 0.50.0 (2026-07-24) is the first PyPI release
-# carrying that fix, and its manylinux x86_64 wheel ships the same
-# libbitsandbytes_rocm{64,70,71,714,72}.so set as the pre-release.
+# Install bitsandbytes on AMD ROCm hosts. bnb <= 0.49.2 NaNs at 4-bit decode
+# shape on every AMD GPU; the fix (bnb #1887) is in the continuous-release_main
+# wheel used below and first ships on PyPI in 0.50.0, hence the fallback floor.
 _BNB_ROCM_PYPI_FALLBACK="bitsandbytes>=0.50.0"
 _install_bnb_rocm() {
     _label="$1"
@@ -278,10 +275,8 @@ _install_bnb_rocm() {
             _bnb_whl_url=""
             ;;
     esac
-    # uv rejects the continuous-release_main bitsandbytes wheel because the
-    # filename version (1.33.7rc0) does not match the embedded metadata version
-    # (0.50.x.dev0, whatever main is at). pip accepts the mismatch, so bootstrap
-    # pip and use it.
+    # uv rejects the pre-release wheel: its filename version (1.33.7rc0) does not
+    # match its metadata version (0.50.x.dev0). pip accepts it, so bootstrap pip.
     if ! "$_venv_py" -m pip --version >/dev/null 2>&1; then
         if ! run_maybe_quiet "$_venv_py" -m ensurepip --upgrade; then
             run_maybe_quiet uv pip install --python "$_venv_py" pip || \
diff --git a/studio/install_python_stack.py b/studio/install_python_stack.py
index adb1420941..981ab651c8 100644
--- a/studio/install_python_stack.py
+++ b/studio/install_python_stack.py
@@ -389,9 +389,7 @@ _GFX_TO_AMD_INDEX_ARCH: dict[str, str] = {
 }
 
 # bitsandbytes continuous-release_main wheels with the ROCm 4-bit GEMV fix
-# (bnb PR #1887, post-0.49.2). bnb <= 0.49.2 NaNs at decode shape on every
-# AMD GPU. PyPI 0.50.0 (2026-07-24) is the first release carrying that fix, so
-# _BNB_ROCM_PYPI_FALLBACK below is a safe floor when these URLs are unreachable.
+# (bnb #1887). bnb <= 0.49.2 NaNs at 4-bit decode shape on every AMD GPU.
 _BNB_ROCM_PRERELEASE_URLS: dict[str, str] = {
     "x86_64": (
         "https://github.com/bitsandbytes-foundation/bitsandbytes/releases/"
@@ -412,7 +410,8 @@ _BNB_ROCM_PRERELEASE_URLS: dict[str, str] = {
         "bitsandbytes-1.33.7.preview-py3-none-win_amd64.whl"
     ),
 }
-# Keep in step with the install.sh fallback (and the amd extra, once it lands here).
+# First PyPI release carrying bnb #1887. Keep in step with the install.sh
+# fallback (and the amd extra, once it lands here).
 _BNB_ROCM_PYPI_FALLBACK = "bitsandbytes>=0.50.0"