diff --git a/README.md b/README.md
index 670e445..faa3c10 100644
--- a/README.md
+++ b/README.md
@@ -15,10 +15,12 @@ The only requirements are `requests` and `BeautifulSoup4` (for HTML parsing). Yo
 ```bash
 python3 -m pip install -r requirements.txt
 ```
-Furthermore the script was tested on the firmware versions `V2.40(AAZI.1)_20180705` and `V2.60(AAZI.2)_20200922` of my `GS1900-10HP` model rev `A1`.
+This script is compatible with the latest firmware version `V2.70(AAZI.1)_20220111` of my `GS1900-10HP` model rev `A1`.
 There are absolutely no guarantees that it will work with your system.
 
-**There is a separate release of this script for each firmware!** 
+**There is a separate release of this script for each firmware!**
+For the previous versions `V2.40(AAZI.1)_20180705` and `V2.60(AAZI.2)_20200922` please use the older release 
+accordingly.
 
 
 ## Usage
diff --git a/poe-manager.py b/poe-manager.py
index ffbac66..6a4e0bf 100755
--- a/poe-manager.py
+++ b/poe-manager.py
@@ -4,7 +4,7 @@
 import argparse
 import requests
 from random import random
-from time import sleep, time
+from time import sleep
 from bs4 import BeautifulSoup
 
 
@@ -15,29 +15,23 @@ def main(args):
     s.verify = False
 
     login_data = {
-        "login": 1,
         "username": args.user,
         "password": encode(args.pwd),
-        "dummy": current_time()
+        "login": 'true',
     }
+    # print("Logging in...")
+    login_step1 = s.post(url, data=login_data)
     login_check_data = {
-        "login_chk": 1,
-        "dummy": current_time()
+        "authId": login_step1.text.strip(),
+        "login_chk": 'true',
     }
-
-    # print("Logging in...")
-    s.get(url, params=login_data)
     # implicitly wait for login to occur
     sleep(1)
-    ret2 = s.get(url, params=login_check_data)
-    if 'OK' not in ret2.text:
-        raise Exception("Login failed: %s" % ret2.text)
+    login_step2 = s.post(url, data=login_check_data)
+    if 'OK' not in login_step2.text:
+        raise Exception("Login failed: %s" % login_step2.text)
 
     # print("Login successful, parsing cookie.")
-    cookie = parse_cookie(s.get(url, params={"cmd": 1}))
-    # print("Got COOKIE: %s" % cookie)
-    s.cookies.set("XSSID", cookie)
-
     ret = s.get(url, params={"cmd": 773})
     if ret.ok:
         soup = BeautifulSoup(ret.content, 'html.parser')
@@ -69,7 +63,7 @@ def main(args):
             output = ret
         print(output)
     else:
-        xssid_content = soup.find('input', {'id': 'XSSID'}).get('value')
+        xssid_content = soup.find('input', {'name': 'XSSID'}).get('value')
         print("Executing command: Turn %s PoE Port %s." %
               ('on' if args.state else 'off', args.port))
         command_data = {
@@ -91,10 +85,6 @@ def main(args):
             raise Exception("Failed to execute command: %s" % ret.text)
 
 
-def current_time():
-    return int(time() * 1000.0)
-
-
 def encode(_input):
     # The python representation of the JS function with the same name.
     # This could be improved further, but I can't be bothered.
@@ -102,8 +92,8 @@ def encode(_input):
     possible = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
     _len = lenn = len(_input)
     i = 1
-    while i <= (320 - _len):
-        if 0 == i % 7 and _len > 0:
+    while i <= (321 - _len):
+        if 0 == i % 5 and _len > 0:
             _len -= 1
             password += _input[_len]
         elif i == 123:
@@ -119,12 +109,6 @@ def encode(_input):
     return password
 
 
-def parse_cookie(cmd_1):
-    for line in cmd_1.text.split("\n"):
-        if 'XSSID' in line:
-            return line.replace('setCookie("XSSID", "', '').replace('");', '').strip()
-
-
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(
         description='Manage the PoE ports of a Zyxel GS1900-10HP switch.')
@@ -138,7 +122,8 @@ def parse_cookie(cmd_1):
                         help='The port number. When querying information, 0 means all ports.')
     parser.add_argument('--state', '-s', dest='state', type=int,
                         choices=[0, 1],
-                        help='Turn the port on (1) or off (0). To query the state, rather than set it, omit this parameter.')
+                        help='Turn the port on (1) or off (0). To query the state, '
+                             'rather than set it, omit this parameter.')
     parser.add_argument('--verbose', '-V', dest='verbose', action="store_true",
                         help='Return detailed information when querying the specified port state.')
     main(parser.parse_args())