STM32F030K6 has 32K Flash.

jonathanpallant · jonathanpallant · commit fa1fb0805a02 · 2022-10-06T22:34:51.000+01:00
And we need it!
diff --git a/neotron-bmc-pico/memory.x b/neotron-bmc-pico/memory.x
@@ -1,7 +1,7 @@
 MEMORY
 {
   /* NOTE K = KiBi = 1024 bytes */
-  FLASH : ORIGIN = 0x08000000, LENGTH = 16K
+  FLASH : ORIGIN = 0x08000000, LENGTH = 32K
   RAM : ORIGIN = 0x20000000, LENGTH = 4K
 }
 
