diff --git a/install.ps1 b/install.ps1
index 233fa84f..17921a9d 100644
--- a/install.ps1
+++ b/install.ps1
@@ -8,7 +8,7 @@ param(
 
 $ErrorActionPreference = "Stop"
 $defaultInstallUrl = "https://raw.githubusercontent.com/Abdess/retrobios/main/install.py"
-$defaultInstallSha256 = "26f2b2fc61c828de3eceec4cc6ba90d10801b3c97a88531adf9b8307a3866e2e"
+$defaultInstallSha256 = "300fcfd077c970a6807b2414b19cbae87b330664f3f7092d8275f5da2fe6e022"
 $maximumInstallerBytes = 2MB
 $installerExit = 0
 $installer = if ($PSScriptRoot) { Join-Path $PSScriptRoot "install.py" } else { $null }
diff --git a/install.py b/install.py
index 91692084..af1a72dd 100644
--- a/install.py
+++ b/install.py
@@ -2765,11 +2765,21 @@ def _report_outcome(
         print("Run the same command again to carry on from here. Nothing is lost.")
         sys.exit(130)
 
-    refused = any(reason == NOT_WRITABLE for _dest, reason in failures or [])
+    # A standalone copy fails by absolute path, in an emulator's folder
+    # rather than the BIOS folder: that folder is where the write went.
+    elsewhere = sorted({Path(dest).parent for dest, _reason in failures or []
+                        if Path(dest).is_absolute()})
+    refused = any(reason == NOT_WRITABLE for dest, reason in failures or []
+                  if not Path(dest).is_absolute())
     advice = [
         _write_advice(path, path in (assumed or set()), (platform_of or {}).get(path, ""))
         for path in paths
     ] if refused else []
+    advice += [_write_advice(folder, False) for folder in sorted({
+        Path(dest).parent for dest, reason in failures or []
+        if Path(dest).is_absolute() and reason == NOT_WRITABLE
+    })]
+    paths = paths + [folder for folder in elsewhere if folder not in paths]
 
     if errors and not downloaded:
         print(f"\nNothing was installed. {_plural(errors, 'file')} failed.")
@@ -3110,6 +3120,7 @@ def select_data_directories(manifest: dict, files: list[dict], narrowed: bool) -
 def do_standalone_copies(
     manifest: dict, bios_path: Path, os_type: str,
     extra_dirs: dict[str, Path] | None = None,
+    failures: list[tuple[str, str]] | None = None,
 ) -> tuple[int, int, int]:
     """Copy BIOS files to standalone emulator directories.
 
@@ -3126,6 +3137,8 @@ def do_standalone_copies(
     Returns (copied, skipped, failed): skipped is a target directory that
     does not exist, failed a copy the system refused (permission, disk
     full, read-only mount), which used to be counted as "dir not found".
+    Each failure is also appended to failures, by absolute path, for the
+    summary to name.
     """
     from fnmatch import fnmatch
 
@@ -3200,6 +3213,10 @@ def do_standalone_copies(
                 except OSError as exc:
                     print(f"  ERROR: {dest}: {exc.strerror or exc}")
                     failed += 1
+                    if failures is not None:
+                        reason = NOT_WRITABLE if _write_refused(exc) else str(
+                            exc.strerror or exc)
+                        failures.append((str(dest), reason))
 
     return copied, skipped, failed
 
@@ -4135,7 +4152,7 @@ def _install(args: argparse.Namespace, real_stdout: TextIO) -> None:
             lb_root = launchbox_root(os_type)
             extra_dirs = launchbox_bios_dirs(lb_root) if lb_root else None
             copied, skipped, copy_failed = do_standalone_copies(
-                manifest, bios_path, os_type, extra_dirs
+                manifest, bios_path, os_type, extra_dirs, failures
             )
             if copied or skipped or copy_failed:
                 print(
diff --git a/install.sh b/install.sh
index 0f038281..d47910d6 100755
--- a/install.sh
+++ b/install.sh
@@ -18,7 +18,7 @@ esac
 TEMP_INSTALLER=""
 TEMP_DIRECTORY=""
 DEFAULT_INSTALL_URL="https://raw.githubusercontent.com/Abdess/retrobios/main/install.py"
-DEFAULT_INSTALL_SHA256="26f2b2fc61c828de3eceec4cc6ba90d10801b3c97a88531adf9b8307a3866e2e"
+DEFAULT_INSTALL_SHA256="300fcfd077c970a6807b2414b19cbae87b330664f3f7092d8275f5da2fe6e022"
 MAX_INSTALLER_BYTES=2097152
 
 cleanup() {
diff --git a/tests/test_install.py b/tests/test_install.py
index 1c685f64..4ab9f361 100644
--- a/tests/test_install.py
+++ b/tests/test_install.py
@@ -2852,6 +2852,43 @@ class ACheckNamesWhatTheCollectionLacks(unittest.TestCase):
 
 
 
+class ARefusedStandaloneCopyIsNamed(unittest.TestCase):
+    """A standalone copy refused by a read-only emulator folder counted as
+    an error with no failures entry: the summary named no file, pointed at
+    the BIOS folder and gave no advice."""
+
+    def test_the_file_and_its_folder_reach_the_summary(self):
+        import contextlib  # noqa: PLC0415
+
+        if os.name == "nt" or os.geteuid() == 0:
+            self.skipTest("a read-only folder needs POSIX modes and a non-root user")
+        bios = Path(_tempdir(self))
+        (bios / "scph5501.bin").write_bytes(b"x")
+        target = Path(_tempdir(self)) / "pcsx2-bios"
+        target.mkdir()
+        target.chmod(0o500)
+        self.addCleanup(target.chmod, 0o700)
+        manifest = {"standalone_copies": [
+            {"file": "scph5501.bin", "emulator": "pcsx2",
+             "targets": {"linux": [str(target)]}},
+        ]}
+        failures: list = []
+        with contextlib.redirect_stdout(io.StringIO()):
+            _copied, _skipped, failed = install.do_standalone_copies(
+                manifest, bios, "linux", None, failures)
+        self.assertEqual(failed, 1)
+        self.assertEqual(failures, [(str(target / "scph5501.bin"), install.NOT_WRITABLE)])
+
+        out = io.StringIO()
+        with contextlib.redirect_stdout(out), self.assertRaises(SystemExit):
+            install._report_outcome([bios], 0, 1, failed, 0, False, failures=failures)
+        text = out.getvalue()
+        self.assertIn(str(target / "scph5501.bin"), text)
+        self.assertIn(str(target), text.split("Location")[1])
+        self.assertIn("cannot write there", text)
+
+
+
 class ThePagesQuoteTheBootstrapsOwnWords(unittest.TestCase):
     """The installer page and the FAQ quoted "install.py SHA-256 mismatch",
     a message the bootstraps no longer print."""