diff --git a/builder/frameworks/pumbaa.py b/builder/frameworks/pumbaa.py
index 4283113..66d221d 100644
--- a/builder/frameworks/pumbaa.py
+++ b/builder/frameworks/pumbaa.py
@@ -53,8 +53,18 @@ env.AddMethod(LookupSources)
 env.AddMethod(VariantDirWrap)
 
 env.Replace(
-    PLATFORMFW_DIR=env.PioPlatform().get_package_dir("framework-pumbaa")
+    PLATFORMFW_DIR=env.PioPlatform().get_package_dir("framework-pumbaa"),
+    UPLOADERFLAGS=[],  # Backward compatibility for obsolete build script
 )
 
 SConscript(
     [env.subst(join("$PLATFORMFW_DIR", "make", "platformio.sconscript"))])
+
+env.Replace(
+    FLASH_EXTRA_IMAGES=[
+        ("0x1000", join("$PLATFORMFW_DIR", "simba", "3pp", "esp32",
+                        "bin", "bootloader.bin")),
+        ("0x8000", join("$PLATFORMFW_DIR", "simba", "3pp", "esp32",
+                        "bin", "partitions_singleapp.bin"))
+    ]
+)