diff --git a/externals/install-dotnet.ps1 b/externals/install-dotnet.ps1
index 6dedd84..16e9be8 100644
--- a/externals/install-dotnet.ps1
+++ b/externals/install-dotnet.ps1
@@ -167,7 +167,7 @@ function Get-CLIArchitecture-From-Architecture([string]$Architecture) {
         { $_ -eq "x86" } { return "x86" }
         { $_ -eq "arm" } { return "arm" }
         { $_ -eq "arm64" } { return "arm64" }
-        default { throw "Architecture not supported. If you think this is a bug, report it at https://github.com/dotnet/cli/issues" }
+        default { throw "Architecture not supported. If you think this is a bug, report it at https://github.com/dotnet/sdk/issues" }
     }
 }
 
@@ -309,14 +309,12 @@ function Parse-Jsonfile-For-Version([string]$JSonFile) {
 
     If (-Not (Test-Path $JSonFile)) {
         throw "Unable to find '$JSonFile'"
-        exit 0
     }
     try {
         $JSonContent = Get-Content($JSonFile) -Raw | ConvertFrom-Json | Select-Object -expand "sdk" -ErrorAction SilentlyContinue
     }
     catch {
         throw "Json file unreadable: '$JSonFile'"
-        exit 0
     }
     if ($JSonContent) {
         try {
@@ -330,16 +328,13 @@ function Parse-Jsonfile-For-Version([string]$JSonFile) {
         }
         catch {
             throw "Unable to parse the SDK node in '$JSonFile'"
-            exit 0
         }
     }
     else {
         throw "Unable to find the SDK node in '$JSonFile'"
-        exit 0
     }
     If ($Version -eq $null) {
         throw "Unable to find the SDK:version node in '$JSonFile'"
-        exit 0
     }
     return $Version
 }
@@ -430,7 +425,7 @@ function Is-Dotnet-Package-Installed([string]$InstallRoot, [string]$RelativePath
     Say-Invocation $MyInvocation
 
     $DotnetPackagePath = Join-Path -Path $InstallRoot -ChildPath $RelativePathToPackage | Join-Path -ChildPath $SpecificVersion
-    Say-Verbose "Is-Dotnet-Package-Installed: Path to a package: $DotnetPackagePath"
+    Say-Verbose "Is-Dotnet-Package-Installed: DotnetPackagePath=$DotnetPackagePath"
     return Test-Path $DotnetPackagePath -PathType Container
 }
 
@@ -663,8 +658,22 @@ if ($DownloadFailed) {
 Say "Extracting zip from $DownloadLink"
 Extract-Dotnet-Package -ZipPath $ZipPath -OutPath $InstallRoot
 
-#  Check if the SDK version is now installed; if not, fail the installation.
-$isAssetInstalled = Is-Dotnet-Package-Installed -InstallRoot $InstallRoot -RelativePathToPackage $dotnetPackageRelativePath -SpecificVersion $SpecificVersion
+#  Check if the SDK version is installed; if not, fail the installation.
+$isAssetInstalled = $false
+
+# if the version contains "RTM" or "servicing"; check if a 'release-type' SDK version is installed.
+if ($SpecificVersion -Match "rtm" -or $SpecificVersion -Match "servicing") {
+    $ReleaseVersion = $SpecificVersion.Split("-")[0]
+    Say-Verbose "Checking installation: version = $ReleaseVersion"
+    $isAssetInstalled = Is-Dotnet-Package-Installed -InstallRoot $InstallRoot -RelativePathToPackage $dotnetPackageRelativePath -SpecificVersion $ReleaseVersion
+}
+
+#  Check if the SDK version is installed.
+if (!$isAssetInstalled) {
+    Say-Verbose "Checking installation: version = $SpecificVersion"
+    $isAssetInstalled = Is-Dotnet-Package-Installed -InstallRoot $InstallRoot -RelativePathToPackage $dotnetPackageRelativePath -SpecificVersion $SpecificVersion
+}
+
 if (!$isAssetInstalled) {
     throw "`"$assetName`" with version = $SpecificVersion failed to install with an unknown error."
 }
diff --git a/externals/install-dotnet.sh b/externals/install-dotnet.sh
index b46c343..31303d9 100644
--- a/externals/install-dotnet.sh
+++ b/externals/install-dotnet.sh
@@ -144,7 +144,7 @@ get_linux_platform_name() {
     else
         if [ -e /etc/os-release ]; then
             . /etc/os-release
-            echo "$ID.$VERSION_ID"
+            echo "$ID${VERSION_ID:+.${VERSION_ID}}"
             return 0
         elif [ -e /etc/redhat-release ]; then
             local redhatRelease=$(</etc/redhat-release)
@@ -159,6 +159,10 @@ get_linux_platform_name() {
     return 1
 }
 
+is_musl_based_distro() {
+    (ldd --version 2>&1 || true) | grep -q musl
+}
+
 get_current_os_name() {
     eval $invocation
 
@@ -173,10 +177,10 @@ get_current_os_name() {
         local linux_platform_name
         linux_platform_name="$(get_linux_platform_name)" || { echo "linux" && return 0 ; }
 
-        if [[ $linux_platform_name == "rhel.6" ]]; then
+        if [ "$linux_platform_name" = "rhel.6" ]; then
             echo $linux_platform_name
             return 0
-        elif [[ $linux_platform_name == alpine* ]]; then
+        elif is_musl_based_distro; then
             echo "linux-musl"
             return 0
         else
@@ -202,7 +206,7 @@ get_legacy_os_name() {
     else
         if [ -e /etc/os-release ]; then
             . /etc/os-release
-            os=$(get_legacy_os_name_from_platform "$ID.$VERSION_ID" || echo "")
+            os=$(get_legacy_os_name_from_platform "$ID${VERSION_ID:+.${VERSION_ID}}" || echo "")
             if [ -n "$os" ]; then
                 echo "$os"
                 return 0
@@ -245,20 +249,29 @@ check_pre_reqs() {
     fi
 
     if [ "$(uname)" = "Linux" ]; then
-        if [ ! -x "$(command -v ldconfig)" ]; then
-            echo "ldconfig is not in PATH, trying /sbin/ldconfig."
-            LDCONFIG_COMMAND="/sbin/ldconfig"
+        if is_musl_based_distro; then
+            if ! command -v scanelf > /dev/null; then
+                say_warning "scanelf not found, please install pax-utils package."
+                return 0
+            fi
+            LDCONFIG_COMMAND="scanelf --ldpath -BF '%f'"
+            [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep libintl)" ] && say_warning "Unable to locate libintl. Probable prerequisite missing; install libintl (or gettext)."
         else
-            LDCONFIG_COMMAND="ldconfig"
+            if [ ! -x "$(command -v ldconfig)" ]; then
+                say_verbose "ldconfig is not in PATH, trying /sbin/ldconfig."
+                LDCONFIG_COMMAND="/sbin/ldconfig"
+            else
+                LDCONFIG_COMMAND="ldconfig"
+            fi
+            local librarypath=${LD_LIBRARY_PATH:-}
+            LDCONFIG_COMMAND="$LDCONFIG_COMMAND -NXv ${librarypath//:/ }"
         fi
 
-        local librarypath=${LD_LIBRARY_PATH:-}
-        LDCONFIG_COMMAND="$LDCONFIG_COMMAND -NXv ${librarypath//:/ }"
-
-        [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep libunwind)" ] && say_warning "Unable to locate libunwind. Probable prerequisite missing; install libunwind."
-        [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep libssl)" ] && say_warning "Unable to locate libssl. Probable prerequisite missing; install libssl."
+        [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep zlib)" ] && say_warning "Unable to locate zlib. Probable prerequisite missing; install zlib."
+        [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep ssl)" ] && say_warning "Unable to locate libssl. Probable prerequisite missing; install libssl."
         [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep libicu)" ] && say_warning "Unable to locate libicu. Probable prerequisite missing; install libicu."
-        [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep -F libcurl.so)" ] && say_warning "Unable to locate libcurl. Probable prerequisite missing; install libcurl."
+        [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep lttng)" ] && say_warning "Unable to locate liblttng. Probable prerequisite missing; install libcurl."
+        [ -z "$($LDCONFIG_COMMAND 2>/dev/null | grep libcurl)" ] && say_warning "Unable to locate libcurl. Probable prerequisite missing; install libcurl."
     fi
 
     return 0
@@ -360,7 +373,7 @@ get_normalized_architecture_from_architecture() {
             ;;
     esac
 
-    say_err "Architecture \`$architecture\` not supported. If you think this is a bug, report it at https://github.com/dotnet/cli/issues"
+    say_err "Architecture \`$architecture\` not supported. If you think this is a bug, report it at https://github.com/dotnet/sdk/issues"
     return 1
 }
 
@@ -471,6 +484,7 @@ parse_jsonfile_for_version() {
         return 1
     fi
 
+    unset IFS;
     echo "$version_info"
     return 0
 }
@@ -631,7 +645,7 @@ copy_files_or_dirs_from_list() {
     local osname="$(get_current_os_name)"
     local override_switch=$(
         if [ "$override" = false ]; then
-            if [[ "$osname" == "linux-musl" ]]; then
+            if [ "$osname" = "linux-musl" ]; then
                 printf -- "-u";
             else
                 printf -- "-n";
@@ -840,13 +854,27 @@ install_dotnet() {
     say "Extracting zip from $download_link"
     extract_dotnet_package "$zip_path" "$install_root"
 
-    #  Check if the SDK version is now installed; if not, fail the installation.
-    if ! is_dotnet_package_installed "$install_root" "$asset_relative_path" "$specific_version"; then
-        say_err "\`$asset_name\` with version = $specific_version failed to install with an unknown error."
-        return 1
+    #  Check if the SDK version is installed; if not, fail the installation.
+    # if the version contains "RTM" or "servicing"; check if a 'release-type' SDK version is installed.
+    if [[ $specific_version == *"rtm"* || $specific_version == *"servicing"* ]]; then
+        IFS='-'
+        read -ra verArr <<< "$specific_version"
+        release_version="${verArr[0]}"
+        unset IFS;
+        say_verbose "Checking installation: version = $release_version"
+        if is_dotnet_package_installed "$install_root" "$asset_relative_path" "$release_version"; then
+            return 0
+        fi
     fi
 
-    return 0
+    #  Check if the standard SDK version is installed.
+    say_verbose "Checking installation: version = $specific_version"
+    if is_dotnet_package_installed "$install_root" "$asset_relative_path" "$specific_version"; then
+        return 0
+    fi
+
+    say_err "\`$asset_name\` with version = $specific_version failed to install with an unknown error."
+    return 1
 }
 
 args=("$@")
diff --git a/package-lock.json b/package-lock.json
index 22fbf05..3c5686a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1032,6 +1032,15 @@
       "resolved": "https://registry.npmjs.org/before-after-hook/-/before-after-hook-2.1.0.tgz",
       "integrity": "sha512-IWIbu7pMqyw3EAJHzzHbWa85b6oud/yfKYg5rqB5hNE8CeMi3nX+2C2sj0HswfblST86hpVEOAb9x34NZd6P7A=="
     },
+    "boom": {
+      "version": "4.3.1",
+      "resolved": "https://registry.npmjs.org/boom/-/boom-4.3.1.tgz",
+      "integrity": "sha1-T4owBctKfjiJ90kDD9JbluAdLjE=",
+      "dev": true,
+      "requires": {
+        "hoek": "4.x.x"
+      }
+    },
     "brace-expansion": {
       "version": "1.1.11",
       "resolved": "https://registry.npmjs.org/brace-expansion/-/brace-expansion-1.1.11.tgz",
@@ -1370,6 +1379,26 @@
         }
       }
     },
+    "cryptiles": {
+      "version": "3.1.4",
+      "resolved": "https://registry.npmjs.org/cryptiles/-/cryptiles-3.1.4.tgz",
+      "integrity": "sha512-8I1sgZHfVwcSOY6mSGpVU3lw/GSIZvusg8dD2+OGehCJpOhQRLNcH0qb9upQnOH4XhgxxFJSg6E2kx95deb1Tw==",
+      "dev": true,
+      "requires": {
+        "boom": "5.x.x"
+      },
+      "dependencies": {
+        "boom": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/boom/-/boom-5.2.0.tgz",
+          "integrity": "sha512-Z5BTk6ZRe4tXXQlkqftmsAUANpXmuwlsF5Oov8ThoMbQRzdGTA1ngYRW160GexgOgjsFOKJz0LYhoNi+2AMBUw==",
+          "dev": true,
+          "requires": {
+            "hoek": "4.x.x"
+          }
+        }
+      }
+    },
     "cssom": {
       "version": "0.3.6",
       "resolved": "https://registry.npmjs.org/cssom/-/cssom-0.3.6.tgz",
@@ -2602,6 +2631,24 @@
         }
       }
     },
+    "hawk": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/hawk/-/hawk-6.0.2.tgz",
+      "integrity": "sha512-miowhl2+U7Qle4vdLqDdPt9m09K6yZhkLDTWGoUiUzrQCn+mHHSmfJgAyGaLRZbPmTqfFFjRV1QWCW0VWUJBbQ==",
+      "dev": true,
+      "requires": {
+        "boom": "4.x.x",
+        "cryptiles": "3.x.x",
+        "hoek": "4.x.x",
+        "sntp": "2.x.x"
+      }
+    },
+    "hoek": {
+      "version": "4.2.1",
+      "resolved": "https://registry.npmjs.org/hoek/-/hoek-4.2.1.tgz",
+      "integrity": "sha512-QLg82fGkfnJ/4iy1xZ81/9SIJiq1NGFUMGs6ParyjBZr6jW2Ufj/snDqTHixNlHdPNwN2RLVD0Pi3igeK9+JfA==",
+      "dev": true
+    },
     "hosted-git-info": {
       "version": "2.7.1",
       "resolved": "https://registry.npmjs.org/hosted-git-info/-/hosted-git-info-2.7.1.tgz",
@@ -4002,6 +4049,102 @@
         }
       }
     },
+    "node-wget": {
+      "version": "0.4.3",
+      "resolved": "https://registry.npmjs.org/node-wget/-/node-wget-0.4.3.tgz",
+      "integrity": "sha512-sltt/nc4NJeI4CuncyBFZZ7W4Wz3Q1oM8h27mYEbj5OihXMsuqJpplPl0WUZTSpXy8AyGczT08jIBsXHxdCtgg==",
+      "dev": true,
+      "requires": {
+        "request": "~2.85.0"
+      },
+      "dependencies": {
+        "ajv": {
+          "version": "5.5.2",
+          "resolved": "https://registry.npmjs.org/ajv/-/ajv-5.5.2.tgz",
+          "integrity": "sha1-c7Xuyj+rZT49P5Qis0GtQiBdyWU=",
+          "dev": true,
+          "requires": {
+            "co": "^4.6.0",
+            "fast-deep-equal": "^1.0.0",
+            "fast-json-stable-stringify": "^2.0.0",
+            "json-schema-traverse": "^0.3.0"
+          }
+        },
+        "fast-deep-equal": {
+          "version": "1.1.0",
+          "resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-1.1.0.tgz",
+          "integrity": "sha1-wFNHeBfIa1HaqFPIHgWbcz0CNhQ=",
+          "dev": true
+        },
+        "har-validator": {
+          "version": "5.0.3",
+          "resolved": "https://registry.npmjs.org/har-validator/-/har-validator-5.0.3.tgz",
+          "integrity": "sha1-ukAsJmGU8VlW7xXg/PJCmT9qff0=",
+          "dev": true,
+          "requires": {
+            "ajv": "^5.1.0",
+            "har-schema": "^2.0.0"
+          }
+        },
+        "json-schema-traverse": {
+          "version": "0.3.1",
+          "resolved": "https://registry.npmjs.org/json-schema-traverse/-/json-schema-traverse-0.3.1.tgz",
+          "integrity": "sha1-NJptRMU6Ud6JtAgFxdXlm0F9M0A=",
+          "dev": true
+        },
+        "oauth-sign": {
+          "version": "0.8.2",
+          "resolved": "https://registry.npmjs.org/oauth-sign/-/oauth-sign-0.8.2.tgz",
+          "integrity": "sha1-Rqarfwrq2N6unsBWV4C31O/rnUM=",
+          "dev": true
+        },
+        "punycode": {
+          "version": "1.4.1",
+          "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.4.1.tgz",
+          "integrity": "sha1-wNWmOycYgArY4esPpSachN1BhF4=",
+          "dev": true
+        },
+        "request": {
+          "version": "2.85.0",
+          "resolved": "https://registry.npmjs.org/request/-/request-2.85.0.tgz",
+          "integrity": "sha512-8H7Ehijd4js+s6wuVPLjwORxD4zeuyjYugprdOXlPSqaApmL/QOy+EB/beICHVCHkGMKNh5rvihb5ov+IDw4mg==",
+          "dev": true,
+          "requires": {
+            "aws-sign2": "~0.7.0",
+            "aws4": "^1.6.0",
+            "caseless": "~0.12.0",
+            "combined-stream": "~1.0.5",
+            "extend": "~3.0.1",
+            "forever-agent": "~0.6.1",
+            "form-data": "~2.3.1",
+            "har-validator": "~5.0.3",
+            "hawk": "~6.0.2",
+            "http-signature": "~1.2.0",
+            "is-typedarray": "~1.0.0",
+            "isstream": "~0.1.2",
+            "json-stringify-safe": "~5.0.1",
+            "mime-types": "~2.1.17",
+            "oauth-sign": "~0.8.2",
+            "performance-now": "^2.1.0",
+            "qs": "~6.5.1",
+            "safe-buffer": "^5.1.1",
+            "stringstream": "~0.0.5",
+            "tough-cookie": "~2.3.3",
+            "tunnel-agent": "^0.6.0",
+            "uuid": "^3.1.0"
+          }
+        },
+        "tough-cookie": {
+          "version": "2.3.4",
+          "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-2.3.4.tgz",
+          "integrity": "sha512-TZ6TTfI5NtZnuyy/Kecv+CnoROnyXn2DN97LontgQpCwsX2XyLYCC0ENhYkehSOwAp8rTQKc/NUIF7BkQ5rKLA==",
+          "dev": true,
+          "requires": {
+            "punycode": "^1.4.1"
+          }
+        }
+      }
+    },
     "normalize-package-data": {
       "version": "2.5.0",
       "resolved": "https://registry.npmjs.org/normalize-package-data/-/normalize-package-data-2.5.0.tgz",
@@ -4918,6 +5061,15 @@
         }
       }
     },
+    "sntp": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/sntp/-/sntp-2.1.0.tgz",
+      "integrity": "sha512-FL1b58BDrqS3A11lJ0zEdnJ3UOKqVxawAkF3k7F0CVN7VQ34aZrV+G8BZ1WC9ZL7NyrwsW0oviwsWDgRuVYtJg==",
+      "dev": true,
+      "requires": {
+        "hoek": "4.x.x"
+      }
+    },
     "source-map": {
       "version": "0.6.1",
       "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
@@ -5113,6 +5265,12 @@
         "safe-buffer": "~5.1.0"
       }
     },
+    "stringstream": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/stringstream/-/stringstream-0.0.6.tgz",
+      "integrity": "sha512-87GEBAkegbBcweToUrdzf3eLhWNg06FJTebl4BVJz/JgWy8CvEr9dRtX5qWphiynMSQlxxi+QqN0z5T32SLlhA==",
+      "dev": true
+    },
     "strip-ansi": {
       "version": "5.2.0",
       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
diff --git a/package.json b/package.json
index 78c9107..9127f28 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,8 @@
     "build": "tsc",
     "format": "prettier --write **/*.ts",
     "format-check": "prettier --check **/*.ts",
-    "test": "jest"
+    "test": "jest",
+    "update-installers": "wget https://dot.net/v1/dotnet-install.ps1 -d externals/install-dotnet.ps1 && wget https://dot.net/v1/dotnet-install.sh -d externals/install-dotnet.sh"
   },
   "repository": {
     "type": "git",
@@ -39,6 +40,7 @@
     "husky": "^2.3.0",
     "jest": "^24.8.0",
     "jest-circus": "^24.7.1",
+    "node-wget": "^0.4.3",
     "prettier": "^1.17.1",
     "ts-jest": "^24.0.2",
     "typescript": "^3.5.1"