diff --git a/firmware/ChibiOS3 b/firmware/ChibiOS3
index b9658ee7ce..0c84da54a4 160000
--- a/firmware/ChibiOS3
+++ b/firmware/ChibiOS3
@@ -1 +1 @@
-Subproject commit b9658ee7ce03af677518134ee5c890d7fdea43a6
+Subproject commit 0c84da54a4a64b50ff35c4365cf6ed00e75cc947
diff --git a/firmware/docs/rusefi_custom_chibios.txt b/firmware/docs/rusefi_custom_chibios.txt
index 37587bdda8..bf8d5fd5fd 100644
--- a/firmware/docs/rusefi_custom_chibios.txt
+++ b/firmware/docs/rusefi_custom_chibios.txt
@@ -8,8 +8,6 @@ At the moment rusEfi custom version of ChibiOS has the following changes:
 
 3) Uncommented "ASMXOBJS" support in os/common/ports/ARMCMx/compilers/GCC/rules.mk
 
-4) Removed "__attribute__((weak))" in os/common/ports/ARMCMx/compilers/GCC/vectors.c
-
 5) Support for half/timeout-ISR for UART-DMA in /os/hal/include/uart.h and os/hal/ports/STM32/LLD/USARTv1/uart_lld.*
 
 6) Changes around "FLOAT_PRECISION" and ftoa() in os/hal/lib/streams/chprintf.c
@@ -18,8 +16,6 @@ At the moment rusEfi custom version of ChibiOS has the following changes:
 
 11) Fixes for UART4-UART8, USART_ISR_* flags USART_CR1_M in os/hal/ports/STM32/LLD/USARTv2/serial_lld.c and os/hal/ports/STM32/LLD/USARTv2/uart_lld.c
 
-12) Use _usb_reset() instead of usb_lld_reset() in os/hal/ports/STM32/LLD/USBv1/usb_lld.c
-
 13) ON_LOCK_HOOK fix in os/rt/include/chdebug.h
 
 14) Use chSysHalt() instead of chDbgStackOverflowPanic() in os/rt/ports/ARM/chcore.h