diff --git a/chirp/drivers/uvk5.py b/chirp/drivers/uvk5.py
index c2fd7d91..aa44c6a8 100644
--- a/chirp/drivers/uvk5.py
+++ b/chirp/drivers/uvk5.py
@@ -2032,6 +2032,8 @@ def k5_approve_firmware(cls, firmware):
             # These are reportendly OEM and newer than the original firmwares,
             # as of late 2025
             '1.02.',
+            # UV-K5 Loaner firmware uses OEFW-LNRxx (e.g. OEFW-LNR24B1)
+            'OEFW-LNR',
             )
         return any(firmware.startswith(x) for x in approved_prefixes)