diff --git a/builder/main.py b/builder/main.py
index dd77a18..e78dcd8 100644
--- a/builder/main.py
+++ b/builder/main.py
@@ -381,7 +381,10 @@ elif upload_protocol in debug_tools:
         # normal firmware upload. flash starts at 0x10000000
         openocd_args.extend([
             "-c", "program {$SOURCE} %s verify reset; shutdown;" %
-            board.get("upload.offset_address", "0x10000000")
+            # board.get("upload.offset_address", "0x10000000")
+            board.get("upload.offset_address", "") 
+           #because of the logic selecting elf or firm (bin), we need to default to no offset because we already defaulted to elf a few lines below when no offset is needed
+           # programming fails otherwise
         ])
     openocd_args = [
         f.replace("$PACKAGE_DIR", platform.get_package_dir(