diff --git a/CHANGELOG.md b/CHANGELOG.md
index f26abcb..c81ced4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,14 @@
+v0.3.4
+======
+
+- Refactored Analysis
+- Add Antenna Analysis
+- Fixed bug in Through Calibration
+- Fixed bug in s2p saving
+- Fixed crash when clicking connect with no device connected
+- Fixed module error with source installation if
+  pkg\_resources missing
+
 v0.3.3
 ======
 
diff --git a/NanoVNASaver/About.py b/NanoVNASaver/About.py
index c358082..c82718b 100644
--- a/NanoVNASaver/About.py
+++ b/NanoVNASaver/About.py
@@ -17,7 +17,7 @@
 #  You should have received a copy of the GNU General Public License
 #  along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-VERSION = "0.3.4-pre"
+VERSION = "0.3.4"
 VERSION_URL = (
     "https://raw.githubusercontent.com/"
     "NanoVNA-Saver/nanovna-saver/master/NanoVNASaver/About.py")
diff --git a/NanoVNASaver/Hardware/Hardware.py b/NanoVNASaver/Hardware/Hardware.py
index 483e707..996c3de 100644
--- a/NanoVNASaver/Hardware/Hardware.py
+++ b/NanoVNASaver/Hardware/Hardware.py
@@ -66,7 +66,7 @@ def get_interfaces() -> List[Tuple[str, str]]:
                 port = d.device
                 logger.info("Found %s (%04x %04x) on port %s",
                             t.name, d.vid, d.pid, d.device)
-                return_ports.append((port, f"{port}({t.name})"))
+                return_ports.append((port, f"{port} ({t.name})"))
     return return_ports
 
 
@@ -91,14 +91,14 @@ def get_VNA(app, serial_port: serial.Serial) -> 'VNA':
     if firmware.find("NanoVNA-H 4") > 0:
         logger.info("Type: NanoVNA-H4")
         vna = NanoVNA_H4(app, serial_port)
-        if firmware.find("sweep_points 201") > 0:
+        if vna.readFirmware().find("sweep_points 201") > 0:
             logger.info("VNA has 201 datapoints capability")
             vna._datapoints = (201, 101)
         return vna
     if firmware.find("NanoVNA-H") > 0:
         logger.info("Type: NanoVNA-H")
         vna = NanoVNA_H(app, serial_port)
-        if firmware.find("sweep_points 201") > 0:
+        if vna.readFirmware().find("sweep_points 201") > 0:
             logger.info("VNA has 201 datapoints capability")
             vna._datapoints = (201, 101)
         return vna
@@ -113,15 +113,18 @@ def get_VNA(app, serial_port: serial.Serial) -> 'VNA':
 
 
 def detect_version(serial_port: serial.Serial) -> str:
+    data = ""
     for i in range(RETRIES):
         drain_serial(serial_port)
         serial_port.write("\r".encode("ascii"))
-        data = serial_port.readline().decode("ascii")
-        if data == "ch> ":
+        data = serial_port.read(128).decode("ascii")
+        if data.startswith("ch> "):
             return "v1"
-        if data == "2":
+        # -H versions
+        if data.startswith("\r\nch> "):
+            return "vh"
+        if data.startswith("2"):
             return "v2"
         logger.debug("Retry detection: %s", i + 1)
     logger.error('No VNA detected. Hardware responded to CR with: %s', data)
-
     return ""
diff --git a/NanoVNASaver/Hardware/VNA.py b/NanoVNASaver/Hardware/VNA.py
index ec1df93..3d61254 100644
--- a/NanoVNASaver/Hardware/VNA.py
+++ b/NanoVNASaver/Hardware/VNA.py
@@ -155,7 +155,7 @@ class VNA:
                     command, exc)
 
     def setSweep(self, start, stop):
-            self.writeSerial(f"sweep {start} {stop} {self.datapoints}")
+        self.writeSerial(f"sweep {start} {stop} {self.datapoints}")
 
 
 # TODO: should be dropped and the serial part should be a connection class
diff --git a/README.md b/README.md
index 520f2e2..d0ab47d 100644
--- a/README.md
+++ b/README.md
@@ -16,11 +16,15 @@ points, and generally display and analyze the resulting data.
 
 # Latest Changes 
 
-## Changes in v0.3.4RC0
- - Refactored Analysis
- - Add Antenna Analysis
- - Fix bug in Through Calibration
- 
+## Changes in v0.3.4
+- Refactored Analysis
+- Add Antenna Analysis
+- Fixed bug in Through Calibration
+- Fixed bug in s2p saving
+- Fixed crash when clicking connect with no device connected
+- Fixed module error with source installation if
+  pkg\_resources missing
+  
 ## Changes in v0.3.3
 - Fixed data acquisition with S-A-A-2 / NanoVNA V2
 - Refactored calibration code