diff --git a/README.md b/README.md
index 27a6b8c5..39a6119c 100644
--- a/README.md
+++ b/README.md
@@ -76,17 +76,28 @@ sphinx-autobuild source build/html
 
 #### Publish BIOS ROM Images
 
-BIOS ROM images are written to OPNsense appliances using a FAT32 formatted drive containing in its root directory
+BIOS ROM images are written to Deciso appliances using a FAT32 formatted (thumb) drive containing in its root directory
 the combined contents of the `source/hardware/files/BIOS_update_sources.zip` file and the latest platform-specific
 compressed BIOS ROM image. The BIOS_update_sources directory contains the EFI boot structure to trigger the
-`startup.nsh` file when booting from the drive.
+`startup.nsh` file when booting from the drive and kickstart the update using the `LATEST.FD` file.
+
+The SHA256 hash of the `BIOS_update.sources.zip` file:
 
 ```
 0cf1b042223482ea073a7a3599d6170be7c849ff8399936cf5a9db1ec5406dcf  BIOS_update_sources.zip
 ```
 
-Place a `.FD` ROM image into the `source/hardware/files/` directory and run:
+To create a publishable archive, use the provided `make_bios.py` script and give it the platform type, version number and
+source `.fd` file:
 
 ```
-./make_bios.py --platform <A10|A20|A30> --source <.FD filename>
+./make_bios.py --platform <A10|A20|A30> --version <version> --source <.FD filename>
 ```
+
+Example output:
+
+```
+2d5143f221fa120ef6d5c8799a90bd2c08e8238b3b9dd350327336d0605944a6 source/hardware/files/A10_v30_bios.tar.gz
+```
+
+A SHA256 hash of the resulting compressed archive is provided for integrity checking.
diff --git a/make_bios.py b/make_bios.py
index d0166e6e..6410280b 100755
--- a/make_bios.py
+++ b/make_bios.py
@@ -86,20 +86,29 @@ def calculate_sha256(file_path):
 if __name__ == '__main__':
     parser = argparse.ArgumentParser()
     parser.add_argument('--platform', help='BIOS platform [A10|A20|A30]')
-    parser.add_argument('--source', help='BIOS ROM image name in source/hardware/files')
+    parser.add_argument('--version', help='BIOS version (for example: 13a)')
+    parser.add_argument('--source', help='BIOS ROM image file (.fd)')
 
     args = parser.parse_args()
     if not args.platform or args.platform not in ['A10', 'A20', 'A30']:
-        print('invalid platform')
+        print('invalid platform, expected A10, A20 or A30')
         exit(1)
 
-    if not args.source.endswith('.FD'):
-        print('invalid source file, must be a .FD file')
+    if not args.version:
+        print('No version specified')
+        exit(1)
+
+    if not args.source.lower().endswith('.fd'):
+        print('invalid source file')
+        exit(1)
+
+    if not os.path.isfile(args.source):
+        print('source file not found')
         exit(1)
 
     static = 'source/hardware/files/BIOS_update_sources.zip'
-    source = f'source/hardware/files/{args.source}'
-    output = f'source/hardware/files/{args.platform}_bios'
+    source = args.source
+    output = f'source/hardware/files/{args.platform}_v{args.version}_bios'
 
     merge_files(static, source, output)
     print(calculate_sha256(f'{output}.tar.gz'), f'{output}.tar.gz')
diff --git a/source/hardware/bios.rst b/source/hardware/bios.rst
index 1c7bae28..1c96eb3d 100644
--- a/source/hardware/bios.rst
+++ b/source/hardware/bios.rst
@@ -23,7 +23,7 @@ DEC800, DEC3800 & DEC4000 series
 +-------------------------------------------------------------------------+-------------------------------------------------------------------------------+
 | Download                                                                |SHA256 Checksum                                                                |
 +=========================================================================+===============================================================================+
-|:download:`Archive <files/A20_bios.tar.gz>`                              |da3bb83194d92af5b61b37a44286dd181f0d44e4e4d9683968c3bd60cbcb89a6               |
+|:download:`Archive <files/A20_v15_bios.tar.gz>`                          |9089a1875617fedf0ae634515d31e683e67f494ae55df8cfcac2db6edfb00888               |
 +-------------------------------------------------------------------------+-------------------------------------------------------------------------------+
 | CVE Update.                                                                                                                                             |
 +---------------------------------------------------------------------------------------------------------------------------------------------------------+
@@ -38,7 +38,7 @@ DEC700 and DEC2700 series
 +-------------------------------------------------------------------------+-------------------------------------------------------------------------------+
 | Download                                                                |SHA256 Checksum                                                                |
 +=========================================================================+===============================================================================+
-|:download:`Archive <files/A10_bios.tar.gz>`                              |30b3df027140b9eaa8affe8c571f5ab580cc895d2102d613cf52341cd8eb6a86               |
+|:download:`Archive <files/A10_v30_bios.tar.gz>`                          |2d5143f221fa120ef6d5c8799a90bd2c08e8238b3b9dd350327336d0605944a6               |
 +-------------------------------------------------------------------------+-------------------------------------------------------------------------------+
 | CVE Update.                                                                                                                                             |
 +---------------------------------------------------------------------------------------------------------------------------------------------------------+
diff --git a/source/hardware/files/A10_bios.tar.gz b/source/hardware/files/A10_v30_bios.tar.gz
similarity index 90%
rename from source/hardware/files/A10_bios.tar.gz
rename to source/hardware/files/A10_v30_bios.tar.gz
index 33fe7a25..5e4a8046 100644
Binary files a/source/hardware/files/A10_bios.tar.gz and b/source/hardware/files/A10_v30_bios.tar.gz differ
diff --git a/source/hardware/files/A20_bios.tar.gz b/source/hardware/files/A20_v15_bios.tar.gz
similarity index 74%
rename from source/hardware/files/A20_bios.tar.gz
rename to source/hardware/files/A20_v15_bios.tar.gz
index 07c7837d..36eff978 100644
Binary files a/source/hardware/files/A20_bios.tar.gz and b/source/hardware/files/A20_v15_bios.tar.gz differ