diff --git a/android/src/main/java/com/pilloxa/dfu/RNNordicDfuModule.java b/android/src/main/java/com/pilloxa/dfu/RNNordicDfuModule.java
index 6520122..e6216ca 100644
--- a/android/src/main/java/com/pilloxa/dfu/RNNordicDfuModule.java
+++ b/android/src/main/java/com/pilloxa/dfu/RNNordicDfuModule.java
@@ -38,7 +38,13 @@ public void startDFU(String address, String name, String filePath, Promise promi
             starter.setDeviceName(name);
         }
         starter.setUnsafeExperimentalButtonlessServiceInSecureDfuEnabled(true);
-        starter.setZip(filePath);
+
+        if (filePath.endsWith(".bin") || filePath.endsWith(".hex")) {
+            starter.setBinOrHex(DfuBaseService.TYPE_APPLICATION, filePath).setInitFile(null, null);
+        } else {
+            starter.setZip(filePath);
+        }
+
         final DfuServiceController controller = starter.start(this.reactContext, DfuService.class);
     }
 
diff --git a/ios/RNNordicDfu.m b/ios/RNNordicDfu.m
index ed58530..ebfda9e 100644
--- a/ios/RNNordicDfu.m
+++ b/ios/RNNordicDfu.m
@@ -213,10 +213,17 @@ - (void)logWith:(enum LogLevel)level message:(NSString * _Nonnull)message
         reject(@"unable_to_find_device", @"Could not find device with deviceAddress", nil);
       } else {
         CBPeripheral * peripheral = [peripherals objectAtIndex:0];
+        DFUFirmware * firmware;
 
         NSURL * url = [NSURL URLWithString:filePath];
-
-        DFUFirmware * firmware = [[DFUFirmware alloc] initWithUrlToZipFile:url];
+        NSString * extension = [url pathExtension];
+
+        if (([extension caseInsensitiveCompare:@"bin"] == NSOrderedSame) ||
+              ([extension caseInsensitiveCompare:@"hex"] == NSOrderedSame)) {
+            firmware = [[DFUFirmware alloc] initWithUrlToBinOrHexFile:url urlToDatFile:nil type:4];
+        } else {
+            firmware = [[DFUFirmware alloc] initWithUrlToZipFile:url];
+        }
 
         DFUServiceInitiator * initiator = [[[DFUServiceInitiator alloc]
                                             initWithCentralManager:centralManager