Global Caché Support Portal

Brian Kerth Oct 29 2 General / Announcements

The latest firmware is available for the Flex_IP and Flex_WiFi units on the Downloads page here:

To update the firmware on your device, download iHelp 4.9 and follow the instructions here:

Be sure to check your current firmware version and hardware (PCB_PN) revision as detailed in the instructions for compatibility before updating.

Garrett Gustafson May 28 2 General / Tech Tips & Solutions

It has come to our attention that Microsoft made a breaking change in Windows 8.1, and removed Adhoc support from any screens that display the available wireless networks.  Windows 8.1 and 10 can still connect to Adhoc networks, but this cannot be accomplished through the normal methods.

This can be a problem for Windows 8.1 + users when attempting to perform initial setup of iTach or iTach Flex wireless devices.

Some manufacturers of WiFi adapters provide their own connection software, which may offer support for Adhoc networks.  However, if this is not the case, there is a method to manually connect to Adhoc networks, which requires using the Windows command shell.

There is a text file attached with all commands and instructions included that will allow an easy find and replace function to replace the <ssid> for each line within the text editor.

Because the wireless network picker in Windows 8.1 doesn't show adhoc networks, connecting must be done by hand.

To see all networks in range, including Adhoc, run the following command in command shell (cmd.exe):

> netsh wlan show networks


The following must be done once for each network:

  • Go to "Network and Sharing Center"
  • Click "Set up a new connection or network"
  • Double click "Manually connect to a wireless network"
  • Enter the SSID of the adhoc network (as shown by "netsh wlan show networks") into the "Network name" field
  • Configure security settings accordingly
  • Uncheck "Start this connection automatically" (important)
  • Click "Next", then "Close"

Run the following command. Replace <ssid> with the SSID of your network for all following commands:

> netsh wlan set profileparameter <ssid> connectiontype=ibss


For Windows 10, the command is:

> netsh wlan set profileparameter <ssid> connectiontype=ibss connectionmode=manual


After setting up, run the following command whenever you want to connect:

> netsh wlan connect <ssid>

Replace <ssid> with the SSID of your network.

Hovering over the WiFi icon in the system tray will show the name of the network you are currently connected to, even if it's an adhoc network (the network picker will not show it if it's adhoc). The name is also visible in "Network and Sharing Center" window.


To disconnect from the adhoc network connect to a different network, turn off WiFi, or run the following command:

> netsh wlan disconnect


To remove the network profile from Windows, run the following command:

> netsh wlan delete profile <ssid>





An additional note on Adhoc. There have reported issues with the need to enable Adhoc mode within the Wireless Adapter drivers for the PC.
Go to Device Manager-->Network Adapters--><your wireless adapter>-->Advanced.
There may be a setting for Adhoc mode available. If attempting to connect to Adhoc with an iTach that uses 802.11b, do not have 802.11n Adhoc mode enabled.  Please let us know other examples that you find within the driver settings by commenting on this post.


There is also another utility available that does not require the command line solution that is outlined above.


Download the Wi-Fi Scanner found here:


After running, the iTach or Flex may show up in the list of broadcasting devices. Right-click on it and select "Connect". If it is successful, try opening a browser and entering the default IP of the iTach ( or Flex ( If the device has connected, the web configuration page will appear, and you can proceed with configuring the device to connect to the local SSID.


It may be necessary to Disconnect the device with the Wi-Fi Scanner after completing the configuration.


Brian Kerth Oct 1 General / Tech Tips & Solutions

This process applies to all GC RS232 available device: GC-100-xx/iTach WF2SL or IP2SL/Flex with Flex Link Serial cable. 

The simplest test to determine whether the transmit and receive of the RS232 serial port is described below:

  • First, download and open the GC utility iTest.exe, found on the downloads page here:
  • After opening, select the serial port to test. For the GC-100, there is the option of Serial 1 (4999), or Serial 2 (5000).
  • For the iTach and iTach Flex devices, select Serial 1 (4999).
  • "Flow Control" will need to be disabled on the web configuration page or through the API commands.
  • Type in the IP address of the GC device, and click "Connect".
  • Once connected, create a short between pins 2 and 3 on the DB9 connector of the serial port, creating a hard loop. A short is created by using a metal conductor between the 2 pins simultaneously. If using a female DB9 interface, a paperclip inserted into the pinholes will work. If using a male DB9 connector, use a flathead screwdriver and maintain contact while sending the test characters as described below.
  • DB9_pin2and3.png
  • While the pins are shorted, type any characters into the Command String box in iTest and click "Send".  If the serial port is functioning,  those characters will appear in the "ASCII Response" field. 



A successful response will confirm that the serial connection is functioning.  

If the response is unsuccessful, then double-check the settings and the loop, and try again.

If there continues to be issues, contact for further assistance.

Brian Kerth Sep 15 iTach / iTach FAQ's

How do I perform a factory reset on my iTach? This applies to all models of the iTach - IP2IR, WF2IR, IP2SL, WF2SL, IP2CC, and WF2CC.

A factory reset on an iTach will default all settings to the original factory state. This is useful in several cases:

1) For Wifi (WF2XX) units, this will put the unit into Adhoc mode. Adhoc is the initial configuration state that is necessary to connect to the device via a direct Wifi connection, with a default IP of Once connected with a compatible device, the iTach can be configured for a local SSID via DHCP or Static IP addressing. Once the configuration has been changed to Infrastructure, and the network settings have been entered and saved, it will leave Adhoc network and attempt to connect to the entered network.

2) For Wired/Ethernet (IP2XX) units, this will place the unit back into default mode, which automatically enables DHCP. When the unit is connected via ethernet to a router, it will pull an IP address from the router DHCP server. Once the IP address is known, either via iHelp or a network monitoring tool, the user can navigate to the web page by typing the IP address into a web browser.

3) If ENABLE LOCK has been checked on the unit, configuration changes cannot be made. Resetting the unit to default will allow a new configuration.

4) If AUTHENTICATION has been enabled, the unit will require a username and password to access configuration. If that password is not known, a reset will default the device, removing the authentication requirement.


To perform a factory reset, you will need a small metal pin, such as a paperclip.

-With the unit powered ON, gently insert the metal pin in the small metal hole located just to the bottom and right of the power cord input of the iTach. 

-It is NOT a button.

-You will need to touch the two metal lead that are just inside the hole. If you do not make contact at first, wiggle the metal pin around just a bit until contact is made.

-Once contact has been made, the iTach LED's will turn off, and then back on, blinking briefly. This indicates that reset has been completed and you may remove the pin.

-Note: The reset hole also contains the learning diode for IR Learning. If you push the metal pin in too far, you may damage the unit, voiding your warranty

Attached is a demonstration video of a reset on an iTach IP2IR.


Brian Kerth Sep 1 iTach Flex / iTach Flex FAQ

While configuring the Flex Wifi (FLEX-WF) unit in Adhoc mode, you may run into challenges attempting to add the unit to your wireless network. Below is a list of known issues that users have encountered:

  • The Flex Wifi is 802.11g, 2.4 gHz. Networks without allowed connectivity for 802.11g will not allow Flex connectivity.
  • Wifi channels 12 and 13 are not supported. These are normally only seen on non-US routers.
  • Non-alphanumeric characters (!,?,-,^) may not work if used in the SSID or password. Please use only letters or numbers.
  • Network security type, SSID and security information are case sensitive, and must be correctly and identically entered to allow for iTach connectivity.
  • Security type and information must match the type of security that is enabled. WEP Authentication and WEP keys should not be entered for a WPA secure network and vice versa. 
    • WPA/WPA2 Mixed Mode: Routers will sometimes have this option as "Mixed" or "Both". We recommend NOT using mixed mode. Please enable "WPA2 Only", as available.
    • One basic test for Security settings is to set the router and Flex to "OPEN" security. If the unit connects, the issue is most likely the password, or the Mixed mode setting.
  • If all of these fail, change the wireless radio mode for the network to 802.11g only mode. If your unit connects once this setting is changed, then the wireless router or access point you are using does not properly implement a mixed radio mode and will need to stay in 802.11g only mode or a new wireless router or access point must be added to the network.