diff --git a/coordinator/CC2531/bin/CC2531ZNP-Prod_20190222.zip b/coordinator/CC2531/bin/CC2531ZNP-Prod_20190222.zip
deleted file mode 100644
index 5621235..0000000
Binary files a/coordinator/CC2531/bin/CC2531ZNP-Prod_20190222.zip and /dev/null differ
diff --git a/coordinator/CC2531/bin/CC2531ZNP-Prod_20190223.zip b/coordinator/CC2531/bin/CC2531ZNP-Prod_20190223.zip
new file mode 100644
index 0000000..64ecbfe
Binary files /dev/null and b/coordinator/CC2531/bin/CC2531ZNP-Prod_20190223.zip differ
diff --git a/coordinator/CHANGELOG.md b/coordinator/CHANGELOG.md
index be0fabe..c64f08e 100644
--- a/coordinator/CHANGELOG.md
+++ b/coordinator/CHANGELOG.md
@@ -1,3 +1,8 @@
+# 20190223
+- Reduced memory footprint
+- Increased number of routes to remember to 40
+- Disabled route expiry
+
 # 20190222
 - Decreased binding and group table size to 1, allows for more memory allocated to the heap. It's not used by Zigbee2mqtt anyway.
 - Reverted size of data buffers to default, a buffer full error is now properly handled by Zigbee2mqtt.
diff --git a/coordinator/firmware.patch b/coordinator/firmware.patch
index 7ee5da2..5f892aa 100644
--- a/coordinator/firmware.patch
+++ b/coordinator/firmware.patch
@@ -34,11 +34,11 @@ index 35aae57..176a2ae 100644
  
 diff --git a/Components/mt/revision_info.h b/Components/mt/revision_info.h
 new file mode 100644
-index 0000000..82ad6bc
+index 0000000..4edc622
 --- /dev/null
 +++ b/Components/mt/revision_info.h
 @@ -0,0 +1 @@
-+#define CODE_REVISION_NUMBER 20190222
++#define CODE_REVISION_NUMBER 20190223
 \ No newline at end of file
 diff --git a/Components/stack/af/AF.c b/Components/stack/af/AF.c
 index c6183b6..2b885b6 100644
@@ -117,10 +117,10 @@ index 7c6c77e..b49a5ca 100644
      znpCfg1 = P2_0;
 diff --git a/Projects/zstack/ZNP/CC253x/Source/preinclude.h b/Projects/zstack/ZNP/CC253x/Source/preinclude.h
 new file mode 100644
-index 0000000..5ec46d5
+index 0000000..7db1502
 --- /dev/null
 +++ b/Projects/zstack/ZNP/CC253x/Source/preinclude.h
-@@ -0,0 +1,90 @@
+@@ -0,0 +1,82 @@
 +// Shared accross all firmwares
 +#define ASSERT_RESET
 +
@@ -160,10 +160,14 @@ index 0000000..5ec46d5
 +#undef MAX_BCAST // avoids incompatible redefinition of macro warning
 +#define MAX_BCAST 12
 +
++// See swra635.pdf
++#define HAL_LCD FALSE
++#define HAL_ADC FALSE
++
 +#if defined FIRMWARE_CC2531_DEFAULT
 +  #define CC2531ZNP
 +  #define NWK_MAX_DEVICE_LIST 15
-+  #define MAXMEMHEAP 3117
++  #define MAXMEMHEAP 3029
 +  #define OPTIMIZE_LARGE_NETWORK  
 +
 +#elif defined FIRMWARE_CC2531_MAX_DEVICES
@@ -173,8 +177,6 @@ index 0000000..5ec46d5
 +  #define MAX_NEIGHBOR_ENTRIES 1
 +
 +#elif defined FIRMWARE_CC2530_DEFAULT
-+  #define HAL_LCD FALSE
-+  #define HAL_ADC FALSE
 +  #define HAL_UART_DMA_RX_MAX 128
 +  #define NWK_MAX_DEVICE_LIST 15
 +  #define MAXMEMHEAP 2997
@@ -188,8 +190,6 @@ index 0000000..5ec46d5
 +  #define MAXMEMHEAP 2995
 +  #define ENABLE_MT_SYS_RESET_SHUTDOWN
 +  #define ZTOOL_P1
-+  #define HAL_LCD FALSE
-+  #define HAL_ADC FALSE
 +  #define HAL_UART_DMA_RX_MAX 128
 +  #define HAL_PA_LNA
 +  #define OPTIMIZE_LARGE_NETWORK
@@ -197,19 +197,11 @@ index 0000000..5ec46d5
 +#endif
 +
 +#if defined OPTIMIZE_LARGE_NETWORK
-+  #define CONCENTRATOR_ENABLE 1
++  #define CONCENTRATOR_ENABLE TRUE
++  #define CONCENTRATOR_ROUTE_CACHE TRUE
 +  #define CONCENTRATOR_DISCOVERY_TIME 120
-+  #define MAX_RTG_SRC_ENTRIES 25
-+  #define SRC_RTG_EXPIRY_TIME 5
-+  #define CONCENTRATOR_ROUTE_CACHE 1
-+  #define MTO_RREQ_LIMIT_TIME 5000
-+  #define LINK_DOWN_TRIGGER 6
-+  #define DEF_NWK_RADIUS 10
-+  #define NWK_ROUTE_AGE_LIMIT 10
-+  #define DEFAULT_ROUTE_REQUEST_RADIUS 20
-+  #define ROUTE_DISCOVERY_TIME 8
-+  #define NWK_LINK_STATUS_PERIOD 20
-+  #define MAX_NEIGHBOR_ENTRIES 16
++  #define MAX_RTG_SRC_ENTRIES 40
++  #define SRC_RTG_EXPIRY_TIME 0
 +#endif
 \ No newline at end of file
 diff --git a/Projects/zstack/ZNP/Source/znp.cfg b/Projects/zstack/ZNP/Source/znp.cfg