diff --git a/default_16MB.csv b/default_16MB.csv
new file mode 100644
index 0000000..67d7737
--- /dev/null
+++ b/default_16MB.csv
@@ -0,0 +1,7 @@
+# Name,   Type, SubType, Offset,  Size, Flags
+nvs,      data, nvs,     0x9000,  0x5000,
+otadata,  data, ota,     0xe000,  0x2000,
+app0,     app,  ota_0,   0x10000, 0x640000,
+app1,     app,  ota_1,   0x650000,0x640000,
+spiffs,   data, spiffs,  0xc90000,0x360000,
+coredump, data, coredump,0xFF0000,0x10000,
diff --git a/platformio.ini b/platformio.ini
index f2f7ca2..074a22b 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -4,10 +4,14 @@ board = esp32-c3-devkitm-1
 framework = arduino
 monitor_speed = 115200
 upload_speed = 921600
-
+; upload to app0
+board_upload.flash_size = 16MB
+board_upload.maximum_size = 16777216
+board_upload.offset_address = 0x10000
 ; Board configuration
 board_build.flash_mode = dio
-board_build.flash_size = 4MB
+board_build.flash_size = 16MB
+board_build.partitions = default_16MB.csv
 
 ; Libraries
 lib_deps =