diff --git a/read_info.py b/read_info.py
index f1bc5f5..756063f 100644
--- a/read_info.py
+++ b/read_info.py
@@ -603,19 +603,49 @@ class DevInfo():
       print("") 
     return self.env.fw
 
-  def download_syslog(self, timeout = 4):
-    self.syslog = []
-    if self.gw is not None:
+
+class SysLog():
+  gw = None       # Gateway()
+  verbose = 1
+  timeout = 10
+  files = []
+  mtdlist = []
+  bdata = None    # EnvBuffer()
+
+  def __init__(self, gw, timeout = 10, verbose = 1, infolevel = 1):
+    self.gw = gateway.Gateway() if gw is None else gw
+    self.verbose = verbose
+    self.timeout = timeout
+    os.makedirs('outdir', exist_ok = True)
+    os.makedirs('tmp', exist_ok = True)
+    if infolevel > 0:
+      self.update(infolevel)
+      
+  def update(self, infolevel):
+    if infolevel >= 1:
+      self.download_syslog()
+    if infolevel >= 2:
+      self.parse_mtdlist()
+    if infolevel >= 3:
+      self.parse_bdata()
+
+  def download_syslog(self, timeout = None):
+    timeout = timeout if timeout is not None else self.timeout
+    self.files = []
+    if not self.gw:
+      gw = gateway.Gateway()
+      gw.web_login()
+    else:
       gw = self.gw
       if gw.status < 1:
         gw.detect_device()
-    else:  
-      gw = gateway.Gateway(timeout = timeout)
+      if not gw.stok:
+        gw.web_login()
     if gw.status < 1:
       die("Xiaomi Mi Wi-Fi device not found (IP: {})".format(gw.ip_addr))
-    stok = gw.web_login()
-    print("Start generating syslog...")
-    r2 = requests.get(gw.apiurl + "misystem/sys_log")
+    if self.verbose > 0:
+      print("Start generating syslog...")
+    r2 = requests.get(gw.apiurl + "misystem/sys_log", timeout = self.timeout)
     if r2.text.find('"code":0') < 0:
       die("SysLog not generated!")
     try:
@@ -623,31 +653,89 @@ class DevInfo():
       path = path.group(1).strip()
     except Exception:
       die("SysLog not generated! (2)")
-    #fn_local = 'syslog.tar.gz'
     url = "http://" + path
-    print('Downloading SysLog from file "{}" ...'.format(url))
+    if self.verbose > 0:
+      print('Downloading SysLog from file "{}" ...'.format(url))
     zip = b''
-    with requests.get(url, stream=True) as r3:
+    with requests.get(url, stream=True, timeout = self.timeout) as r3:
       r3.raise_for_status()
       for chunk in r3.iter_content(chunk_size=8192): 
         zip += chunk
-    file = io.BytesIO(zip)
-    tar = tarfile.open(fileobj = file, mode='r:gz')
+    fn_local = 'outdir/syslog.tar.gz'
+    with open(fn_local, "wb") as file:
+      file.write(zip)
+    if os.path.exists("syslog_test.tar.gz"):  # TEST
+      fn_local = "syslog_test.tar.gz"
+    tar = tarfile.open(fn_local, mode='r:gz')
     for member in tar.getmembers():
       if not member.isfile() or not member.name:
         continue 
-      if member.name.find('usr/log/') >= 0:  # skip syslog files
+      if member.name.find('usr/log/') >= 0:  # skip raw syslog files
         continue
-      file = types.SimpleNamespace()
-      file.name = member.name
-      file.size = member.size
-      file.data = tar.extractfile(member).read()
-      self.syslog.append(file)
-      #print('name = "{}", size = {} ({})'.format(file.name, file.size, len(file.data)))
-      #if len(file.data) < 200:
-      #  print(file.data)
-    tar.close()  
-    return self.syslog
+      item = types.SimpleNamespace()
+      item.name = member.name
+      item.size = member.size
+      item.data = tar.extractfile(member).read()
+      self.files.append(item)
+      if self.verbose >= 2:
+        print('name = "{}", size = {} ({})'.format(item.name, item.size, len(item.data)))
+        if len(item.data) < 200:
+          print(item.data)
+    tar.close()
+    return self.files
+    
+  def get_file_by_name(self, filename, fatal_error = False):
+    if self.files:
+      for i, item in enumerate(self.files):
+        if os.path.basename(item.name) == filename:
+          return item
+    if fatal_error:
+      die('File "{}" not found in syslog!'.format(filename))
+    return None
+
+  def parse_mtdlist(self):
+    self.mtdlist = []
+    file = self.get_file_by_name('xiaoqiang.log', fatal_error = True)
+    txt = file.data.decode('ascii')
+    x = txt.find("\nMTD  table:\n")
+    if x <= 0:
+      die('MTD table not found into syslog!')
+    mtdtbl = re.findall(r'mtd([0-9]+): ([0-9a-fA-F]+) ([0-9a-fA-F]+) "(.*?)"', txt)
+    if len(mtdtbl) <= 0:
+      return []
+    mtdlist = []
+    if self.verbose:
+      print("SysLog MTD table:")
+    for i, mtd in enumerate(mtdtbl):
+      item = types.SimpleNamespace()
+      item.id = int(mtd[0])
+      item.size = int(mtd[1], 16)
+      item.name = mtd[3]
+      mtdlist.append(item)
+      if self.verbose:
+        print('  %2d > size: 0x%08X  name: "%s"' % (item.id, item.size, item.name))
+    self.mtdlist = mtdlist
+    return mtdlist
+
+  def get_mtd_by_name(self, name):
+    if self.mtdlist:
+      name = name.lower()
+      for i, mtd in enumerate(self.mtdlist):
+        if mtd.name.lower().endswith(name):
+          return mtd
+    return None
+
+  def parse_bdata(self):
+    self.bdata = None
+    file = self.get_file_by_name('bdata.txt', fatal_error = True)
+    env = EnvBuffer(file.data.decode('ascii'), '\n')
+    if self.verbose >= 2:
+      print('SysLog BData List:')
+      for i, (k, v) in enumerate(env.var.items()):
+        v = '' if (v is None) else ('=' + v)
+        print("  " + k + v)
+    self.bdata = env
+    return env
 
 
 if __name__ == "__main__":