diff --git a/avr/devices/c01/boot/boot.asm b/avr/devices/c01/boot/boot.asm
index 644b0f0..da1bc2d 100644
--- a/avr/devices/c01/boot/boot.asm
+++ b/avr/devices/c01/boot/boot.asm
@@ -122,9 +122,12 @@ main:
 .include "modules/flash/defs.asm"
 .include "modules/flash/eeprom.asm"
 .include "modules/flash/io.asm"
-.include "modules/flash/io_attn.asm"
+;.include "modules/flash/io_attn.asm"
 .include "modules/flash/io_uart.asm"
-.include "modules/flash/io_uart_all_attn.asm"
+;.include "modules/flash/io_uart_all_attn.asm"
+
+.include "modules/flash/io_uart_attn_small.asm"
+
 .include "modules/flash/flash1pmega.asm"
 .include "modules/flash/flashxp.asm"
 .include "modules/flash/flashprocess.asm"