diff --git a/buildroot/share/scripts/MarlinBinaryProtocol.py b/buildroot/share/scripts/MarlinBinaryProtocol.py
index ecf9df35e2f51..dca5e167f761f 100644
--- a/buildroot/share/scripts/MarlinBinaryProtocol.py
+++ b/buildroot/share/scripts/MarlinBinaryProtocol.py
@@ -11,11 +11,14 @@
 import datetime
 import random
 try:
-    import heatshrink
+    import heatshrink2 as heatshrink
     heatshrink_exists = True
 except ImportError:
-    heatshrink_exists = False
-
+    try:
+        import heatshrink
+        heatshrink_exists = True
+    except ImportError:
+        heatshrink_exists = False
 
 def millis():
     return time.perf_counter() * 1000
@@ -393,18 +396,19 @@ def abort(self):
     def copy(self, filename, dest_filename, compression, dummy):
         self.connect()
 
-        compression_support = heatshrink_exists and self.compression['algorithm'] == 'heatshrink' and compression
-        if compression and (not heatshrink_exists or not self.compression['algorithm'] == 'heatshrink'):
-            print("Compression not supported by client")
-        #compression_support = False
+        has_heatshrink = heatshrink_exists and self.compression['algorithm'] == 'heatshrink'
+        if compression and not has_heatshrink:
+            hs = '2' if sys.version_info[0] > 2 else ''
+            print("Compression not supported by client. Use 'pip install heatshrink%s' to fix." % hs)
+            compression = False
 
         data = open(filename, "rb").read()
         filesize = len(data)
 
-        self.open(dest_filename, compression_support, dummy)
+        self.open(dest_filename, compression, dummy)
 
         block_size = self.protocol.block_size
-        if compression_support:
+        if compression:
             data = heatshrink.encode(data, window_sz2=self.compression['window'], lookahead_sz2=self.compression['lookahead'])
 
         cratio = filesize / len(data)
@@ -419,17 +423,17 @@ def copy(self, filename, dest_filename, compression, dummy):
             self.write(data[start:end])
             kibs = (( (i+1) * block_size) / 1024) / (millis() + 1 - start_time) * 1000
             if (i / blocks) >= dump_pctg:
-                print("\r{0:2.0f}% {1:4.2f}KiB/s {2} Errors: {3}".format((i / blocks) * 100, kibs, "[{0:4.2f}KiB/s]".format(kibs * cratio) if compression_support else "", self.protocol.errors), end='')
+                print("\r{0:2.0f}% {1:4.2f}KiB/s {2} Errors: {3}".format((i / blocks) * 100, kibs, "[{0:4.2f}KiB/s]".format(kibs * cratio) if compression else "", self.protocol.errors), end='')
                 dump_pctg += 0.1
             if self.protocol.errors > 0:
                 # Dump last status (errors may not be visible)
-                print("\r{0:2.0f}% {1:4.2f}KiB/s {2} Errors: {3} - Aborting...".format((i / blocks) * 100, kibs, "[{0:4.2f}KiB/s]".format(kibs * cratio) if compression_support else "", self.protocol.errors), end='')
+                print("\r{0:2.0f}% {1:4.2f}KiB/s {2} Errors: {3} - Aborting...".format((i / blocks) * 100, kibs, "[{0:4.2f}KiB/s]".format(kibs * cratio) if compression else "", self.protocol.errors), end='')
                 print("")   # New line to break the transfer speed line
                 self.close()
                 print("Transfer aborted due to protocol errors")
                 #raise Exception("Transfer aborted due to protocol errors")
                 return False;
-        print("\r{0:2.0f}% {1:4.2f}KiB/s {2} Errors: {3}".format(100, kibs, "[{0:4.2f}KiB/s]".format(kibs * cratio) if compression_support else "", self.protocol.errors)) # no one likes transfers finishing at 99.8%
+        print("\r{0:2.0f}% {1:4.2f}KiB/s {2} Errors: {3}".format(100, kibs, "[{0:4.2f}KiB/s]".format(kibs * cratio) if compression else "", self.protocol.errors)) # no one likes transfers finishing at 99.8%
 
         if not self.close():
             print("Transfer failed")
diff --git a/buildroot/share/scripts/upload.py b/buildroot/share/scripts/upload.py
index af15a825906e5..c97605e3f4b74 100644
--- a/buildroot/share/scripts/upload.py
+++ b/buildroot/share/scripts/upload.py
@@ -7,17 +7,6 @@
 
 Import("env")
 
-# Needed (only) for compression, but there are problems with pip install heatshrink
-#try:
-#    import heatshrink
-#except ImportError:
-#    # Install heatshrink
-#    print("Installing 'heatshrink' python module...")
-#    env.Execute(env.subst("$PYTHONEXE -m pip install heatshrink"))
-#
-# Not tested: If it's safe to install python libraries in PIO python try:
-#    env.Execute(env.subst("$PYTHONEXE -m pip install https://github.com/p3p/pyheatshrink/releases/download/0.3.3/pyheatshrink-pip.zip"))
-
 import MarlinBinaryProtocol
 
 #-----------------#
@@ -191,6 +180,21 @@ def _RollbackUpload(FirmwareFile):
     # "upload_random_name": generate a random 8.3 firmware filename to upload
     upload_random_filename = upload_delete_old_bins and not marlin_long_filename_host_support
 
+    # Heatshrink module is needed (only) for compression
+    if upload_compression:
+        if sys.version_info[0] > 2:
+            try:
+               import heatshrink2
+            except ImportError:
+               print("Installing 'heatshrink2' python module...")
+               env.Execute(env.subst("$PYTHONEXE -m pip install heatshrink2"))
+        else:
+            try:
+               import heatshrink
+            except ImportError:
+               print("Installing 'heatshrink' python module...")
+               env.Execute(env.subst("$PYTHONEXE -m pip install heatshrink"))
+
     try:
 
         # Start upload job