diff --git a/Makefile.loader b/Makefile.loader
index 969ff863..e3eb03a5 100644
--- a/Makefile.loader
+++ b/Makefile.loader
@@ -59,6 +59,7 @@ OBJ_FW += $(addprefix $(BUILD_FW)/, \
 	loader/header.o \
 	loader/main.o \
 	extmod/modtrezorui/display.o \
+	extmod/modtrezorui/inflate.o \
 	extmod/modtrezorui/font_bitmap.o \
 	trezorhal/common.o \
 	trezorhal/image.o \
diff --git a/micropython/extmod/modtrezorui/modtrezorui-display.h b/micropython/extmod/modtrezorui/modtrezorui-display.h
index b0aa7547..61695043 100644
--- a/micropython/extmod/modtrezorui/modtrezorui-display.h
+++ b/micropython/extmod/modtrezorui/modtrezorui-display.h
@@ -94,7 +94,7 @@ STATIC mp_obj_t mod_TrezorUi_Display_image(size_t n_args, const mp_obj_t *args)
     if (datalen != image.len - 12) {
         mp_raise_ValueError("Invalid size of data");
     }
-    display_image(x, y, w, h, data + 12, image.len - 12);
+    display_image(x, y, w, h, data + 12, datalen);
     return mp_const_none;
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(mod_TrezorUi_Display_image_obj, 4, 4, mod_TrezorUi_Display_image);
diff --git a/micropython/loader/main.c b/micropython/loader/main.c
index b23443b3..44417e22 100644
--- a/micropython/loader/main.c
+++ b/micropython/loader/main.c
@@ -1,5 +1,7 @@
 #include STM32_HAL_H
 
+#include <string.h>
+
 #include "common.h"
 #include "display.h"
 #include "image.h"
@@ -14,6 +16,17 @@ void pendsv_isr_handler(void) {
     __fatal_error("pendsv");
 }
 
+void display_vendor(const uint8_t *vimg)
+{
+    if (memcmp(vimg, "TOIf", 4) != 0) {
+        return;
+    }
+    uint16_t w = *(uint16_t *)(vimg + 4);
+    uint16_t h = *(uint16_t *)(vimg + 6);
+    uint32_t datalen = *(uint32_t *)(vimg + 8);
+    display_image(0, 0, w, h, vimg + 12, datalen);
+}
+
 void check_and_jump(void)
 {
     LOADER_PRINTLN("checking firmware");
@@ -32,7 +45,7 @@ void check_and_jump(void)
     if (image_check_signature((const uint8_t *)(FIRMWARE_START + vhdr.hdrlen))) {
         LOADER_PRINTLN("valid firmware image");
         // TODO: remove debug wait
-        LOADER_PRINTLN("waiting 1 second");
+        display_vendor(vhdr.vimg);
         HAL_Delay(1000);
         // end
         LOADER_PRINTLN("JUMP!");