diff -r add6ffb41cb3 chirp/drivers/btech.py
--- a/chirp/drivers/btech.py	Fri Apr 01 18:20:53 2022 -0400
+++ b/chirp/drivers/btech.py	Fri Apr 01 22:01:38 2022 -0400
@@ -359,26 +359,11 @@
     return data
 
 
-def _send(radio, data, upload=False):
+def _send(radio, data):
     """Send data to the radio device"""
 
     try:
-        for byte in data:
-            radio.pipe.write(byte)
-            # Some OS (mainly Linux ones) are too fast on the serial and
-            # get the MCU inside the radio stuck in the early stages, this
-            # hits some models more than others.
-            #
-            # To cope with that we introduce a delay on the writes.
-            # Many option have been tested (delaying only after error occures,
-            # after short reads, only for linux, ...)
-            # Finally, a static delay was chosen as simplest of all solutions
-            # (Michael Wagner, OE4AMW)
-            # (for details, see issue 3993)
-            #
-            # skip 'sleep()' when uploading added by Jim Unroe, KC9HI
-            if upload is False:
-                sleep(0.002)
+        radio.pipe.write(data)
 
         # DEBUG
         if debug is True:
@@ -507,9 +492,6 @@
     # some radios needs a extra read and check for a code on it, this ones
     # has the check value in the _id2 var, others simply False
     if radio._id2 is not False:
-        # lower the timeout here as this radios are reseting due to timeout
-        radio.pipe.timeout = 0.05
-
         # query & receive the extra ID
         _send(radio, _make_frame("S", 0x3DF0, 16))
         id2 = _rawrecv(radio, 21)
@@ -558,9 +540,6 @@
             if len(ack) == 0 or ack[-1:] != ACK_CMD:
                 raise errors.RadioError("Radio didn't ACK the upload")
 
-            # restore the default serial timeout
-            radio.pipe.timeout = STIMEOUT
-
     # DEBUG
     LOG.info("Positive ident, this is a %s %s" % (radio.VENDOR, radio.MODEL))
 
@@ -576,6 +555,9 @@
     # put radio in program mode and identify it
     _do_ident(radio, status)
 
+    # pause here for the radio to catch up
+    sleep(0.002)
+
     # the models that doesn't have the extra ID have to make a dummy read here
     if radio._id2 is False:
         _send(radio, _make_frame("S", 0, BLOCK_SIZE))
@@ -656,7 +638,7 @@
             frame = frame[1:]
 
         # send the frame
-        _send(radio, frame, True)
+        _send(radio, frame)
 
         # receiving the response
         ack = _rawrecv(radio, 1)