diff --git a/avr/main.c b/avr/main.c
index 01fedfe..74a32be 100644
--- a/avr/main.c
+++ b/avr/main.c
@@ -44,6 +44,8 @@ static inline uint16_t checksum() {
 ISR(SPI_STC_vect) {
     uint8_t value = SPDR;
 
+    uart_putchar(value, NULL);
+
     switch (i) {
         case 0: {
             if (value == 0x88) {
@@ -131,8 +133,6 @@ ISR(SPI_STC_vect) {
             }
         }
     }
-
-    uart_putchar(value, NULL);
 }
 
 static void setup_clock_external() {
diff --git a/include/tabby/avr/uart.h b/include/tabby/avr/uart.h
index 5bf5f07..55c34a1 100644
--- a/include/tabby/avr/uart.h
+++ b/include/tabby/avr/uart.h
@@ -1,7 +1,7 @@
 #ifndef _TABBY_AVR_UART_H
 #define _TABBY_AVR_UART_H
 
-#define TABBY_AVR_UART_BAUD 115200
+#define TABBY_AVR_UART_BAUD 57600
 
 void uart_init();
 
diff --git a/include/tabby/link.h b/include/tabby/link.h
index ce024c9..046deac 100644
--- a/include/tabby/link.h
+++ b/include/tabby/link.h
@@ -11,7 +11,7 @@
 
 #include <tabby/clock.h>
 
-#define TABBY_LINK_BAUD B115200
+#define TABBY_LINK_BAUD B57600
 
 int tabby_link_open(const char *dev);
 
diff --git a/src/printer.c b/src/printer.c
index b2e7f4e..5b5b656 100644
--- a/src/printer.c
+++ b/src/printer.c
@@ -36,22 +36,19 @@ int tabby_printer_packet_recv(int fd, tabby_printer_packet_header *header,
 
     while ((len = tabby_link_recv(fd, &value, 1)) >= 0) {
         if (i == 0) {
-            if (value == 0x83) {
+            if (value == 0x88) {
                 header->preamble[0] = value;
                 i++;
             } else {
-                errno = EIO;
-
-                goto error_io;
+                continue;
             }
         } else if (i == 1) {
             if (value == 0x33) {
                 header->preamble[1] = value;
                 i++;
             } else {
-                errno = EIO;
                 i = 0;
-                goto error_io;
+                continue;
             }
         } else if (i == 2) {
             header->type = value;
@@ -65,6 +62,7 @@ int tabby_printer_packet_recv(int fd, tabby_printer_packet_header *header,
         } else if (i == 5) {
             header->size |= value << 8;
             i++;
+
             b = 0;
         } else if (b < header->size) {
             ((uint8_t *)body)[b++] = value;