diff --git a/firmware/bootloader/readme.md b/firmware/bootloader/readme.md
index 49c0afc478..3a03b64a83 100644
--- a/firmware/bootloader/readme.md
+++ b/firmware/bootloader/readme.md
@@ -3,3 +3,7 @@
 See https://github.com/rusefi/rusefi/wiki/Firmware-update-via-CAN
 
 Here we combine ChibiOS with OpenBLT
+
+Q: how do I build bootloader for specific board say proteus/meta-info-proteus_f7.env?
+
+A: TBD