diff --git a/sys/arduino/u8x8/DrawXBM/DrawXBM.ino b/sys/arduino/u8x8/DrawXBM/DrawXBM.ino
index 4744470dc..2afc5677b 100644
--- a/sys/arduino/u8x8/DrawXBM/DrawXBM.ino
+++ b/sys/arduino/u8x8/DrawXBM/DrawXBM.ino
@@ -70,7 +70,7 @@
 //U8X8_SSD1312_120X28_SW_I2C u8x8(/* clock=*/ SCL, /* data=*/ SDA, /* reset=*/ 8);
 //U8X8_SSD1312_120X28_HW_I2C u8x8(/* reset=*/ U8X8_PIN_NONE);
 //U8X8_SH1106_128X64_NONAME_4W_HW_SPI u8x8(/* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);
-U8X8_SH1106_128X64_NONAME_HW_I2C u8x8(/* reset=*/ U8X8_PIN_NONE);
+//U8X8_SH1106_128X64_NONAME_HW_I2C u8x8(/* reset=*/ U8X8_PIN_NONE);
 //U8X8_SH1106_128X64_VCOMH0_4W_HW_SPI u8x8(/* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);		// same as the NONAME variant, but maximizes setContrast() range
 //U8X8_SH1106_128X64_WINSTAR_4W_HW_SPI u8x8(/* cs=*/ 10, /* dc=*/ 9, /* reset=*/ 8);		// same as the NONAME variant, but uses updated SH1106 init sequence
 //U8X8_SH1106_128X32_VISIONOX_HW_I2C u8x8(/* reset=*/ U8X8_PIN_NONE); 
@@ -328,6 +328,9 @@ U8X8_SH1106_128X64_NONAME_HW_I2C u8x8(/* reset=*/ U8X8_PIN_NONE);
   Notes:
     * Width and height of the XBM Image must be a multiple of 8
     * XBM image must be placed in PROGMAM (add const and U8X8_PROGMEM)
+    * XBM image can be exported from any other image with "GIMP" (https://www.gimp.org/) tool
+    * XBM format is plain C code, just copy&past code into the .ino file
+    * It might be required to add "const" and "U8X8_PROGMEM" to the XBM data array
 
 */
 const static unsigned char startup_xbm[] U8X8_PROGMEM = {
diff --git a/sys/sdl/u8x8_xbm/main.c b/sys/sdl/u8x8_xbm/main.c
index bfd702a83..f3f65fb4d 100644
--- a/sys/sdl/u8x8_xbm/main.c
+++ b/sys/sdl/u8x8_xbm/main.c
@@ -1,7 +1,6 @@
 #include "u8x8.h"
 
 /*
-
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