diff --git a/Production/Firmware/aic_pico.uf2 b/Production/Firmware/aic_pico.uf2
index fc87b7b..b6557ce 100644
Binary files a/Production/Firmware/aic_pico.uf2 and b/Production/Firmware/aic_pico.uf2 differ
diff --git a/firmware/src/pn5180.c b/firmware/src/pn5180.c
index 8247e81..0173e7a 100644
--- a/firmware/src/pn5180.c
+++ b/firmware/src/pn5180.c
@@ -63,9 +63,9 @@ bool pn5180_init(spi_inst_t *port, uint8_t rx, uint8_t sck, uint8_t tx,
     spi.nss = nss;
     spi.busy = busy;
 
-    uint8_t buf[4];
-    pn5180_read_eeprom(0x10, buf, sizeof(buf));
-    return (buf[0] >= 3) && (buf[0] <= 10) && (buf[2] >=3) && (buf[2] <= 10);
+    uint8_t buf[2];
+    pn5180_read_eeprom(0x12, buf, sizeof(buf));
+    return (buf[0] <= 15) && (buf[1] >= 2) && (buf[1] <= 15);
 }
 
 static pn5180_wait_loop_t wait_loop = NULL;