diff --git a/lib/ble/ble.toit b/lib/ble/ble.toit
index bf05e3a27..49e62fb1c 100644
--- a/lib/ble/ble.toit
+++ b/lib/ble/ble.toit
@@ -668,7 +668,7 @@ class DataBlock:
     return at + data.size + 2
 
   /**
-  Converts this datablock to a raw byte array.
+  Converts this data block to a raw byte array.
   */
   to-raw -> ByteArray:
     result := ByteArray data.size + 2
diff --git a/lib/ble/local.toit b/lib/ble/local.toit
index bf694dbcb..1e023b03a 100644
--- a/lib/ble/local.toit
+++ b/lib/ble/local.toit
@@ -62,8 +62,11 @@ class Peripheral extends Resource_:
       --interval/Duration=DEFAULT-INTERVAL
       --connection-mode/int=BLE-CONNECT-MODE-NONE:
     if system.platform == system.PLATFORM-MACOS:
+      if scan-response: throw "UNSUPPORTED"
+      data.data-blocks.do: | block/DataBlock |
+        if not block.is-name and not block.is-services and not block.is-flags:
+          throw "UNSUPPORTED"
       if interval != DEFAULT-INTERVAL or connection-mode != BLE-CONNECT-MODE-NONE: throw "INVALID_ARGUMENT"
-      data.manufacturer-specific: throw "INVALID_ARGUMENT"
 
       services := data.services
       raw-service-classes := Array_ services.size null
diff --git a/lib/ble/remote.toit b/lib/ble/remote.toit
index b5dac1605..60010e792 100644
--- a/lib/ble/remote.toit
+++ b/lib/ble/remote.toit
@@ -83,24 +83,24 @@ class Central extends Resource_:
                   BleUuid raw-service-classes[it]
 
           discovery = RemoteScannedDevice
-            next[0]
-            next[1]
-            --is-connectable=next[6]
-            --is-scan-response=false
-            AdvertisementData
-              --name=next[2]
-              --services=service-classes
-              --manufacturer-specific=(next[4] ? next[4] : #[])
-              --flags=next[5]
-              --connectable=next[6]
-              --check-size=false
+              next[0]
+              next[1]
+              --is-connectable=next[6]
+              --is-scan-response=false
+              AdvertisementData
+                  --name=next[2]
+                  --services=service-classes
+                  --manufacturer-specific=(next[4] ? next[4] : #[])
+                  --flags=next[5]
+                  --connectable=next[6]
+                  --check-size=false
         else:
           discovery = RemoteScannedDevice
-            next[0]
-            next[1]
-            --is-connectable=next[3]
-            --is-scan-response=next[4]
-            AdvertisementData.raw next[2] --connectable=next[3]
+              next[0]
+              next[1]
+              --is-connectable=next[3]
+              --is-scan-response=next[4]
+              AdvertisementData.raw next[2] --connectable=next[3]
 
         block.call discovery
     finally:
diff --git a/tests/byte-array-test.toit b/tests/byte-array-test.toit
index 41c3dd7fc..639ae93d7 100644
--- a/tests/byte-array-test.toit
+++ b/tests/byte-array-test.toit
@@ -26,6 +26,7 @@ main:
   test-to-string
   test-hash-code
   test-construction
+  test-reverse
 
 test-basic:
   2.repeat:
@@ -314,3 +315,28 @@ test-construction -> none:
 
   ba = ByteArray 5
   expect-equals #[0, 0, 0, 0, 0] ba
+
+test-reverse -> none:
+  SIZES := [
+    0,
+    1,
+    2,
+    3,
+    5,
+    100,
+    101,
+    1000,
+    1001,
+    1023,
+    1024,
+    1025,
+  ]
+  SIZES.do: | size/int |
+    bytes := ByteArray size: random 256
+    reversed := bytes.reverse
+    expect-equals size reversed.size
+    size.repeat: | i |
+      expect-equals bytes[size - i - 1] reversed[i]
+    copy := bytes.copy
+    copy.reverse --in-place
+    expect-bytes-equal reversed copy
diff --git a/tests/hw/esp32/ble4-shared.toit b/tests/hw/esp32/ble4-shared.toit
index 5a05dd8a6..378c44035 100644
--- a/tests/hw/esp32/ble4-shared.toit
+++ b/tests/hw/esp32/ble4-shared.toit
@@ -15,7 +15,7 @@ import monitor
 
 import .ble-util
 
-TEST-SERVICE ::= BleUuid "df451d2d-e899-4346-a8fd-bca9cbfebc0b"
+TEST-SERVICE ::= BleUuid "650a73d3-d7fd-4d08-b734-d11e25b0856d"
 
 TEST-CHARACTERISTIC ::= BleUuid "77d0b04e-bf49-4048-a4cd-fb46be32ebd0"
 TEST-CHARACTERISTIC-CALLBACK ::= BleUuid "1a1bb179-c006-4217-a57b-342e24eca694"
diff --git a/tests/hw/esp32/ble6-advertise-shared.toit b/tests/hw/esp32/ble6-advertise-shared.toit
index 3202a342a..f83b8302c 100644
--- a/tests/hw/esp32/ble6-advertise-shared.toit
+++ b/tests/hw/esp32/ble6-advertise-shared.toit
@@ -148,7 +148,6 @@ main-central:
     expect-equals [TEST-SERVICE] data.services
     expect-equals "Test" data.name
 
-
   test-data address characteristic --central=central --no-is-connectable: | data/AdvertisementData |
     blocks := data.data-blocks
     expect-equals 0 blocks.size