diff --git a/libs/base/enums.d.ts b/libs/base/enums.d.ts
index bd7fcd0e..f457764b 100644
--- a/libs/base/enums.d.ts
+++ b/libs/base/enums.d.ts
@@ -22,13 +22,8 @@
     }
 
 
-    declare const enum ValType {
-    Undefined = 0,
-    Boolean = 1,
-    Number = 2,
-    String = 3,
-    Object = 4,
-    Function = 5,
+    declare const enum PerfCounters {
+    GC = 0,
     }
 
 // Auto-generated. Do not edit. Really.
diff --git a/libs/base/shims.d.ts b/libs/base/shims.d.ts
index bc035e08..7496461a 100644
--- a/libs/base/shims.d.ts
+++ b/libs/base/shims.d.ts
@@ -42,6 +42,12 @@ declare interface Buffer {
     //% start.defl=0 length.defl=-1 shim=BufferMethods::shift
     shift(offset: int32, start?: int32, length?: int32): void;
 
+    /**
+     * Convert a buffer to string assuming UTF8 encoding
+     */
+    //% shim=BufferMethods::toString
+    toString(): string;
+
     /**
      * Convert a buffer to its hexadecimal representation.
      */
@@ -72,6 +78,13 @@ declare namespace control {
      */
     //% shim=control::createBuffer
     function createBuffer(size: int32): Buffer;
+
+    /**
+     * Create a new buffer with UTF8-encoded string
+     * @param str the string to put in the buffer
+     */
+    //% shim=control::createBufferFromUTF8
+    function createBufferFromUTF8(str: string): Buffer;
 }
 declare namespace loops {
 
@@ -147,7 +160,31 @@ declare namespace control {
      *
      */
     //% shim=control::__log
-    function __log(text: string): void;
+    function __log(prority: int32, text: string): void;
+
+    /**
+     * Dump internal information about a value.
+     */
+    //% shim=control::dmesgValue
+    function dmesgValue(v: any): void;
+
+    /**
+     * Force GC and dump basic information about heap.
+     */
+    //% shim=control::gc
+    function gc(): void;
+
+    /**
+     * Force GC and halt waiting for debugger to do a full heap dump.
+     */
+    //% shim=control::heapDump
+    function heapDump(): void;
+
+    /**
+     * Return true if profiling is enabled in the current build.
+     */
+    //% shim=control::profilingEnabled
+    function profilingEnabled(): boolean;
 }
 
 // Auto-generated. Do not edit. Really.
diff --git a/libs/screen/shims.d.ts b/libs/screen/shims.d.ts
index f8a5b06d..561c1be4 100644
--- a/libs/screen/shims.d.ts
+++ b/libs/screen/shims.d.ts
@@ -45,6 +45,18 @@ declare interface Image {
     //% shim=ImageMethods::fill
     fill(c: int32): void;
 
+    /**
+     * Copy row(s) of pixel from image to buffer (8 bit per pixel).
+     */
+    //% shim=ImageMethods::getRows
+    getRows(x: int32, dst: Buffer): void;
+
+    /**
+     * Copy row(s) of pixel from buffer to image.
+     */
+    //% shim=ImageMethods::setRows
+    setRows(x: int32, src: Buffer): void;
+
     /**
      * Return a copy of the current image
      */
diff --git a/package.json b/package.json
index d2e3571d..dc79ecbd 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "pxt-ev3",
-  "version": "1.0.11",
+  "version": "1.1.0",
   "description": "LEGO MINDSTORMS EV3 for Microsoft MakeCode",
   "private": true,
   "keywords": [
@@ -39,8 +39,8 @@
     "webfonts-generator": "^0.4.0"
   },
   "dependencies": {
-    "pxt-common-packages": "0.23.56",
-    "pxt-core": "4.0.9"
+    "pxt-common-packages": "6.4.13",
+    "pxt-core": "5.5.18"
   },
   "scripts": {
     "test": "node node_modules/pxt-core/built/pxt.js travis"