flashtool working for initial and update

tools/flashtool.py

@@ -9,7 +9,7 @@ from tkinter import filedialog as FileDialog
 
 import builtins
 
-
+VERSION="1.0, esptool 3.2"
 
 oldprint=builtins.print
 def print(*args, **kwargs):
@@ -35,6 +35,8 @@ class App:
         frame.columnconfigure(1, weight=3)
         tk.Label(frame,text="ESP32 NMEA2000 Flash Tool").grid(row=row,column=0,columnspan=2,sticky='ew')
         row+=1
+        tk.Label(frame, text=VERSION).grid(row=row,column=0,columnspan=2,sticky="ew",pady=10)
+        row+=1
         self.mode=tk.IntVar()
         self.mode.set(1)
         rdFrame=tk.Frame(frame)

tools/readme-esptool-win.txt

@@ -1,10 +1,29 @@
-Hwo to build the bundled esp tool for windows
+How to build the bundled esp tool for windows
 =============================================
 (1) install python 3 on windows, add to path
 (2) pip install pyinstaller
 (3) create an empty dir, cd there
 (4) get esptool.py (either pip install esptool, search for it or download from
-    https://github.com/espressif/esptool - just esptool.py)
+    https://github.com/espressif/esptool - just esptool.py) or copy it from here
 (5) run: pyinstaller -F esptool.py
     esptool.exe in dist\esptool
 
+How to build the bundled flashtool.exe (on windows)
+===================================================
+(1) install python 3, add to path
+(2) pip install pyinstaller
+(3) pip install pyserial
+(4) in this directory:
+    pyinstaller -F flashtool.py
+    will create flashtool.exe in dist
+
+
+How to run flashtool on Linux
+=============================
+(1) have python 3 installed
+(2) install python3-serial as package __or__ sudo pip3 install pyserial
+(3) install python3-tk as package __or__ sudo pip3 install tkinter
+(4) ./flashtool.py
+
+
+