diff --git a/Makefile b/Makefile
index 81d72bd..b1b5aad 100644
--- a/Makefile
+++ b/Makefile
@@ -37,7 +37,7 @@ ENABLE_TX1750                    := 0
 ENABLE_MDC1200                   := 1
 ENABLE_PWRON_PASSWORD            := 0
 ENABLE_RESET_AES_KEY             := 1
-ENABLE_BIG_FREQ                  := 1
+ENABLE_BIG_FREQ                  := 0
 ENABLE_SMALL_BOLD                := 0
 # trim trailing 0.044 kB
 ENABLE_TRIM_TRAILING_ZEROS       := 1
diff --git a/driver/bk4819.c b/driver/bk4819.c
index 4a86458..962c3de 100644
--- a/driver/bk4819.c
+++ b/driver/bk4819.c
@@ -2289,7 +2289,7 @@ void BK4819_reset_fsk(void)
 					(0u <<  9) |   // 0 ~ 1   1 = invert data when TX
 					(0u <<  8) |   // 0 ~ 1   ???
 					(0u <<  4) |   // 0 ~ 15  preamble length
-					(1u <<  3) |   // 0 ~ 1       sync length
+					(0u <<  3) |   // 0 ~ 1       sync length
 					(0u <<  0);    // 0 ~ 7   ???
 	
 		// Set entire packet length (not including the pre-amble and sync bytes we can't seem to disable)
diff --git a/firmware.bin b/firmware.bin
deleted file mode 100644
index 8ffe209..0000000
Binary files a/firmware.bin and /dev/null differ
diff --git a/firmware.packed.bin b/firmware.packed.bin
deleted file mode 100644
index 5cb0526..0000000
Binary files a/firmware.packed.bin and /dev/null differ
diff --git a/ui/lock.c b/ui/lock.c
index 65b09bd..dc7ea6a 100644
--- a/ui/lock.c
+++ b/ui/lock.c
@@ -95,7 +95,7 @@ void UI_DisplayLock(void)
 						case KEY_7:
 						case KEY_8:
 						case KEY_9:
-							INPUTBOX_Append(Key - KEY_0);
+							INPUTBOX_append(Key - KEY_0);
 
 							if (g_input_box_index < 6)   // 6 frequency digits
 							{