diff --git a/README.md b/README.md
index 092e048456..ac932b27dc 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,7 @@ current binaries are always available at http://rusefi.com/build_server/
 
 | Release date  | Revision  | Details |
 | ------------  | --------- | ------- |
+| 03/09/2017    | r13223    | bugfix #374: persistent configuration starts to touch firmware - settings would need to be reloaded |
 | 03/09/2017    | r13146    | bugfix #370: duty cycle vs error code 6050 |
 | 03/06/2017    | r13123    | bugfix #363: 2/1 skipped wheel is a corner-case |
 | 03/05/2017    | r13108    | bugfix #363: trigger front only processing |
diff --git a/firmware/config/stm32f4ems/STM32F407xG_CCM.ld b/firmware/config/stm32f4ems/STM32F407xG_CCM.ld
index 0aeee2c0fc..1dbaf479a9 100644
--- a/firmware/config/stm32f4ems/STM32F407xG_CCM.ld
+++ b/firmware/config/stm32f4ems/STM32F407xG_CCM.ld
@@ -33,7 +33,7 @@ __process_stack_size__  = 0x0600;
 
 MEMORY
 {
-    flash : org = 0x08000000, len = 1M
+    flash : org = 0x08000000, len = 896k
     ram : org = 0x20000000, len = 112k
     ethram : org = 0x2001C000, len = 16k
     ccmram : org = 0x10000000, len = 64k
diff --git a/firmware/controllers/flash_main.cpp b/firmware/controllers/flash_main.cpp
index 243e969b22..ddce4e643d 100644
--- a/firmware/controllers/flash_main.cpp
+++ b/firmware/controllers/flash_main.cpp
@@ -36,14 +36,19 @@ extern persistent_config_container_s persistentState;
 
 extern engine_configuration_s *engineConfiguration;
 
-#define FLASH_ADDR 0x08060000
+/**
+ * this address needs to be above 'flash' region available for firmware
+ * todo: an ideal solution would be to define this address in the .ld / .icf mapping file
+ */
+
+#define FLASH_ADDR 0x080E0000
 
 #define PERSISTENT_SIZE sizeof(persistent_config_container_s)
 
 /**
  * https://sourceforge.net/p/rusefi/tickets/335/
  *
- * Address of second cofig copy, rounded to 4K. 4K is the page size is it?
+ * Address of second config copy, rounded to 4K. 4K is the page size is it?
  *
  */
 #define FLASH_ADDR_SECOND_COPY (FLASH_ADDR + ((PERSISTENT_SIZE + 4095) & 0xFFFFF000))
diff --git a/firmware/iar/ch.icf b/firmware/iar/ch.icf
index 63f48eb13f..80e11cb641 100644
--- a/firmware/iar/ch.icf
+++ b/firmware/iar/ch.icf
@@ -5,7 +5,7 @@
 define symbol __ICFEDIT_intvec_start__ = 0x08000000;
 /*-Memory Regions-*/
 define symbol __ICFEDIT_region_ROM_start__ = 0x08000000;
-define symbol __ICFEDIT_region_ROM_end__   = 0x0803FFFF;
+define symbol __ICFEDIT_region_ROM_end__   = 0x080DFFFF;
 define symbol __ICFEDIT_region_RAM_start__ = 0x20000000;
 define symbol __ICFEDIT_region_RAM_end__   = 0x2001FFFF;
 define symbol __ICFEDIT_region_CCMRAM_start__ = 0x10000000;