diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5db5147885..847bed19a9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,14 @@
+## 0.8.0-rc.4
+
+### ENHANCEMENTS
+
+- [Electron/Photon/P1] Increase Device OS API argument lengths. More data in Functions, Variables, Publish, Subscribe... oh my! [#1537](https://github.com/particle-iot/firmware/pull/1537)
+
+### BUGFIXES
+
+- [Electron] `Particle.keepAlive()` API was broken since v0.6.2-rc.2 firmware on Electron where the System would override an early set User ping interval.  This required a workaround of updating the keepAlive after the System made a connection to the Cloud.  See issue #1482 for workaround. [#1536](https://github.com/particle-iot/firmware/pull/1536)
+- [Electron] Fixes missing URCs for received data during TX or RX socket operations. This caused the modem not to be able to receive further data properly until it re-connected to the Cloud which it would do automatically but usually after a short or longer period of time. [#1530](https://github.com/particle-iot/firmware/pull/1530)
+
 ## 0.8.0-rc.3
 
 ### ENHANCEMENTS
diff --git a/build/release.sh b/build/release.sh
index 16d841b218..7f2ee5ab3c 100755
--- a/build/release.sh
+++ b/build/release.sh
@@ -1,10 +1,11 @@
-VERSION="0.8.0-rc.3"
+VERSION="0.8.0-rc.4"
 
 function release_file()
 {
     name=$1
     ext=$2
-    cp ../build/target/$name/platform-$PLATFORM_ID-m/$name.$ext $OUT/$name-$VERSION-$PLATFORM.$ext
+    suffix=$3
+    cp ../build/target/$name/platform-$PLATFORM_ID-$suffix/$name.$ext $OUT/$name-$VERSION-$PLATFORM.$ext
 }
 
 function release_file_core()
@@ -16,12 +17,13 @@ function release_file_core()
 
 function release_binary()
 {
-    release_file $1 bin
+    suffix=${2:-m}
+    release_file $1 bin $suffix
     cp $OUT/$1-$VERSION-$PLATFORM.bin $BINARIES_OUT/$1-$VERSION-$PLATFORM.bin
-    release_file $1 elf
-    release_file $1 map
-    release_file $1 lst
-    release_file $1 hex
+    release_file $1 elf $suffix
+    release_file $1 map $suffix
+    release_file $1 lst $suffix
+    release_file $1 hex $suffix
 }
 
 function release_binary_core()
@@ -53,21 +55,33 @@ OUT=../build/releases/release-$VERSION-p$PLATFORM_ID
 mkdir -p $OUT
 rm -rf ../build/target
 if [ $1 -eq 6 ] || [ $1 -eq 8 ]; then
-    make -s PLATFORM_ID=$PLATFORM_ID clean all COMPILE_LTO=n
+    cd ../bootloader
+    make clean all -s PLATFORM_ID=$PLATFORM_ID
+    release_binary bootloader lto
+    cd ../modules
+    make clean all -s PLATFORM_ID=$PLATFORM_ID COMPILE_LTO=n
     release_binary system-part1
     release_binary system-part2
     release_binary_module user-part tinker
 else if [ $1 -eq 10 ]; then
-    make -s PLATFORM_ID=$PLATFORM_ID clean all COMPILE_LTO=n DEBUG_BUILD=y # APP=tinker_electron
+    cd ../bootloader
+    make clean all -s PLATFORM_ID=$PLATFORM_ID
+    release_binary bootloader lto
+    cd ../modules
+    make clean all -s PLATFORM_ID=$PLATFORM_ID COMPILE_LTO=n DEBUG_BUILD=y
     release_binary system-part1
     release_binary system-part2
     release_binary system-part3
     release_binary_module user-part tinker
 else if [ $1 -eq 0 ]; then
+    cd ../bootloader
+    make clean all -s PLATFORM_ID=$PLATFORM_ID
+    release_binary bootloader lto
     cd ../main
-    make -s PLATFORM_ID=$PLATFORM_ID clean all COMPILE_LTO=y APP=tinker
+    cp ../Dockerfile.test .
+    make clean all -s PLATFORM_ID=$PLATFORM_ID COMPILE_LTO=y APP=tinker
     release_binary_core tinker
     cd ../modules
 fi
 fi
-fi
+fi
\ No newline at end of file
diff --git a/build/version.mk b/build/version.mk
index 9af8c1551c..50afe659fc 100755
--- a/build/version.mk
+++ b/build/version.mk
@@ -1,8 +1,8 @@
 
-VERSION_STRING = 0.8.0-rc.3
+VERSION_STRING = 0.8.0-rc.4
 
 # PRODUCT_FIRMWARE_VERSION reported by default
 # FIXME: Unclear if this is used, PRODUCT_FIRMWARE_VERSION defaults to 65535 every release
-VERSION = 302
+VERSION = 303
 
 CFLAGS += -DSYSTEM_VERSION_STRING=$(VERSION_STRING)
diff --git a/modules/shared/system_module_version.mk b/modules/shared/system_module_version.mk
index 62d4ca979c..1227ef7842 100644
--- a/modules/shared/system_module_version.mk
+++ b/modules/shared/system_module_version.mk
@@ -1,8 +1,8 @@
 # Skip to next 100 every v0.x.0 release (e.g. 108 for v0.6.2 to 200 for v0.7.0-rc.1)
 # Bump by 1 for every prerelease or release with the same v0.x.* base.
-SYSTEM_PART1_MODULE_VERSION ?= 302
-SYSTEM_PART2_MODULE_VERSION ?= 302
-SYSTEM_PART3_MODULE_VERSION ?= 302
+SYSTEM_PART1_MODULE_VERSION ?= 303
+SYSTEM_PART2_MODULE_VERSION ?= 303
+SYSTEM_PART3_MODULE_VERSION ?= 303
 
 RELEASE_080_MODULE_VERSION_BASE ?= 300
 RELEASE_070_RC5_MODULE_VERSION ?= 204
diff --git a/system/inc/system_version.h b/system/inc/system_version.h
index 99314acb71..1ddeac3cf3 100644
--- a/system/inc/system_version.h
+++ b/system/inc/system_version.h
@@ -71,7 +71,8 @@ extern "C" {
 #define SYSTEM_VERSION_v080RC1  0x00080001
 #define SYSTEM_VERSION_v080RC2  0x00080002
 #define SYSTEM_VERSION_v080RC3  0x00080003
-#define SYSTEM_VERSION SYSTEM_VERSION_v080RC3
+#define SYSTEM_VERSION_v080RC4  0x00080004
+#define SYSTEM_VERSION SYSTEM_VERSION_v080RC4
 
 /**
  * For Library/App creators. Can be used to ensure features/api's are present.
@@ -120,6 +121,7 @@ extern "C" {
 #define SYSTEM_VERSION_080RC1
 #define SYSTEM_VERSION_080RC2
 #define SYSTEM_VERSION_080RC3
+#define SYSTEM_VERSION_080RC4
 
 typedef struct __attribute__((packed)) SystemVersionInfo
 {
diff --git a/system/system-versions.md b/system/system-versions.md
index 4a59393cb5..6166ee4d04 100644
--- a/system/system-versions.md
+++ b/system/system-versions.md
@@ -48,6 +48,7 @@
 | 101 (200)[1] | 300 | 0.8.0-rc.1 |      (Photon, P1, Electron) |
 | 101 | 301 | 0.8.0-rc.2 |               (Photon, P1, Electron) |
 | 201 | 302 | 0.8.0-rc.3 |         (Core, Photon, P1, Electron) |
+| 201 | 303 | 0.8.0-rc.4 |         (Core, Photon, P1, Electron) |
 
 [1] For 0.8.0-rc.1, The v101 bootloader was also released in the Github releases as v200. Thus the next released bootloader in the 0.8.x line should be v201. As of 4/5/2018: 22 device had v200 bootloaders.