diff --git a/README.md b/README.md
index 534ede7..68bc72b 100644
--- a/README.md
+++ b/README.md
@@ -3,3 +3,5 @@
 Quansheng UV-K5 firmware encoder/decoder
 
 WARNING: only decoding for now, as I dont know how to calculate specific CRC
+
+[firmware versions](https://drive.google.com/drive/folders/1GXWjiW0geMiAnVxWpm5rf6OUlXT43ZzB?usp=share_link)