General Question

330X-S could not fly or GU-344 LED is flashing between RED/GREEN (setup is abnormal).

1) If you are using Radio Control Transmitter that has more than 4 channels, and you are Not connecting the green wire to the receiver, after initial setup, flight is abnormal. Please connect green wire back to GU-344 (to any pins that are not used, see attached photo) and reset the throttle on radio control transmitter to solve flight or ESC setup problem.
2) If you are using Radio Control with 4-channels, and green wire is not connected to receiver. Please connect green GAIN wire back to GU-344 (to any pins that are not used, see attached photo) and reset the throttle on radio control transmitter to solve flight or ESC setup problem.NYX

Solution for the erratic reaction (glitch) of 330X-S

Cause: The vibration frequency of the flyer will interfere with the gyro ‘s gain.

Solution :
(1) Please check the flyer ‘s screw is tight enough.
If the screw are slack, please tighten the screws.
(2) If you can’t find out the reason , (all screws tighten, no problem).
please change other way to stabilize the GU-344
(Photo 1).

A. please reduce the vibration absorbing sponge (from 4 to 3).
B. Stick a coin in the bottom of GU-344, to add weight to the GU-344.
(This will reduce vibration)
•Attention : The thickness of the coin should not be more then the sponge
( Photo 2 ).


GU-INS ESC solution

When high end servos and other FPV equipments are installed on the 500X, they are capable of placing large demands on the power systems in use.
You must provide extra power for the camera gimbal/FPV devices follow the instructions listed below.

1) Unplug all the positive pole wires (Red) from the 4 ESCs.

1) Unplug all the positive pole wires (Red) from the 4 ESCs.
2) Choose one plug from the camera gimbal servos, make a Y-wire for connecting to battery (5V~6V) or BEC as illustrated.

2) Choose
When using a BEC you must ensure that the BEC is capable of delivering the current demands of the equipment you have installed. In addition to this, make sure the wiring and switch you have selected are capable of handling high current draws. Always ensure the extra battery is fully charged before each flight.

GU-INS FIRMWARE upgrade problem / Solution

Product: GU-INS

Issue: GU-INS FIRMWARE upgrade problem

What to do when your PC or NB does not download the USB driver automatically when connecting GU-INS to USB port of your computer as described in page 24 of GU-INS manual.

*Note: If your computer does not recognize GU-INS connected thru USB port

Please check in your Computer Device manager if there is an Yellow exclamation sign beside your USB device.

To open Device Manager, click Start, click Control Panel, double-click Administrative Tools, double-click Computer Management, and then click Device Manager.

There should be an YELLOW SIGN (Triangle with an exclamation) beside the USB device that is not installed correctly.

To re-install the USB driver for this device

Open Device Manager.
After finding the hardware you’re updating drivers for, right click on the hardware’s name or icon and choose Properties. In this Properties window, click the Driver tab.
Click Update Driver….
Note: The Update Driver Software wizard will begin.

Click search for driver automatically/download from internet.
The Update Driver Software wizard will search the internet for the USB driver.

P.S. There is no specific USB driver for GU-INS, use generic driver provided by Windows Update Driver Software wizard search

Note: If the above process does not work.

Un-install the device and restart the above process again to re-install the USB device driver.

GU-INS Firmware UPDATE Version Instructions

GU-INS Firmware UPDATE Version 1.4


1. Better compatibility with various ESC on the market in addition to
GAUI ESC, Hobby Wing ESC, etc….

GU-INS Firmware UPDATE Version 1.3.1


1. Automatically detects if GA-608 Hexa & Octo Adapter (for GU-INS) is connected;
if it is, GU-INS is in Hexa/Octo copter control mode,
if not, GU-INS is in Quad control mode.

2. Better compatibility between motors and ESCs variations.

3. Prior to flights, examination of system status. When just powering on multi-rotor (500X, 540H etc…),
the GU-INS MODE LED light will turn RED first (and one can hear beep-beep sound from motors).
Pick-up the multi-rotor in your hand and wobble it in the air (all three axis must be detected by sensor).
Sensors inside the GU-INS mounted on the multi-rotor will sense the attitude motions and will change to GREEN LED light
(motor will sound ready beeping sound),
this will indicate GU-INS system is ready and the Multi-Rotor is ready for flight.

*Note: If after the above step, there is no reaction and the MODE light remains RED.
Please disconnect power and restart the system repeat above step again.

4. About Gimbal calibration procedure (step 9, 11, 13, 15, GU-INS Manual) having to press the SET button for setting confirmation.
Users can use the RADIO CONTROL Transmitter’s GO HOME switch to accomplish the same confirmation by flipping the GO HOME switch ON and OFF

*This is to avoid the shaking caused when pressing down on the SET button on GU-INS (note the original set button function still exist).

5. When updating the firmware (USB connection between GU-INS and computer and executing the update firmware), the MODE light will turn OFF,
when Firmware update is completed, the MODE light will flash then stay RED
(this red MODE LED light indicate system update is complete and is in self diagnostic mode,
please refer to Improvement point 3 above for the status light meaning and what to do next).

Minimun Advertised Price Policy

Minimum Advertised Price(MAP) Policy

Tai Shih Hobby Corporation (TSH GAUI) has determined that its interests are best served through the adoption and enforcement of a minimum advertised price (“MAP”) policy. This MAP policy is designed to (1) protect reseller margins so that desirable pre-sales and post-sales services and infrastructure can be provided by our channel partners (2) support the TSH GAUI brand as a premium offering; and (3) avoid destructive intra-brand channel conflict.

This policy has been unilaterally adopted by TSH GAUI and will be uniformly enforced.

Policy Coverage
This MAP policy covers all TSH GAUI Partner resellers located globally.

Although resellers remain free to establish their own resale prices, TSH GAUI will, without assuming any liability, unilaterally impose sanctions as described in this policy against resellers who advertise applicable TSH GAUI products at prices below those specified herein.
TSH GAUI will not discuss any conditions of acceptance related to this MAP policy, as it is non-negotiable, and will not be altered for any reseller. MAP applies only to minimum advertised prices and does not apply to the price at which the products are actually sold, or to advertised prices higher than the unilateral minimum resale prices established by TSH GAUI from time to time.

Minimum Advertised Price (MAP)
The current listing of products and applicable MAP prices are published on TSH GAUI’s website and also emailed to Distributors/Dealers from time to time. The products and MAP may be changed from time to time at TSH GAUI’s sole discretion. TSH GAUI resellers are responsible for remaining current with MAP policy, products and pricing. Each advertisement below the MAP will be a violation of the policy.
The MAP policy applies to all advertisements of specific TSH GAUI products in and all media including, without limitation, flyers, posters, coupons, mailers, inserts, newspapers, magazines, catalogs, mail order catalogs, Internet or similar electronic media, television, radio and public signage.

Policy Violations
In the event a reseller chooses not to follow the TSH GAUI MAP policy, sanctions will be unilaterally imposed by TSH GAUI.
Violations of MAP policy shall be determined by TSH GAUI in its sole discretion. TSH GAUI will not accept any communication from a reseller who has violated this MAP policy regarding the violation or the willingness of the reseller to bring its prices into compliance with the MAP policy.

Policy Modifications
TSH GAUI reserves the right at any time to modify, suspend, or discontinue the MAP policy in whole or in part or designate promotional periods during which the terms of the policy change or designate periods of time during which the policy is not applicable. Policy modifications shall be made available on the TSH GAUI official website at

Contact Information
All questions or comments regarding this MAP policy are to be directed to the policy manager at
The policy manager shall be solely responsible for determining whether a violation of the policy has occurred, communicating decisions to resellers regarding the policy and receiving any communication regarding sanctions imposed under this policy.

Warranty Information

Warranty Information

To the general retail consumer
Please note TSH GAUI is the Original Equipment Manufacturer. Your selling dealer should be your first point of contact for any troubles you may be having with your product. Our dealers appreciate your business and welcome the opportunity to provide you with superior customer service.
Many issues can be resolved thru technical support emails. We will also be adding FAQ section in our official website to provide answers on frequently encountered issues.

General Return Policy (for Dealer returns to TSH GAUI)
Customer must first obtain a Returned Merchandise Authorization Number (RMA#) issues by TSH GAUI and Write this RMA# clearly on the return package with your exchange/return or we will not accept or process your return. You must include a detailed explanation on the TSH GAUI RMA FORM which you can download here.
All TSH GAUI products sold are warranted for 30 days to be free from manufacturer defect. Dated proof of purchase must be presented or item will be considered out of warranty.

TSH GAUI shall not in any way or manner be liable to the buyer under this clause unless the following conditions for the installation, use and/or operation of the TSH GAUI product in question are strictly complied with:

1. The TSH GAUI product is installed and operated in accordance with TSH GAUI’s instructions and any manual issued by TSH GAUI in conjunction with the installation and operation of the TSH GAUI product and in accordance with generally accepted industrial practices; and
2. The TSH GAUI product is used under normal conditions for which it is designed; and
3. The TSH GAUI product receives due and proper care and maintenance; and
4. The TSH GAUI product is not subjected to any modification or adaptation which is not authorized by TSH GAUI in writing; and
5. No device, instrument, equipment (either separately or in combination) is installed for use in connection with or as part of the TSH GAUI product, the use or combination of which has not been approved or recommended by TSH GAUI in writing; and

Your selling dealer is your first point of contact for warranty issues. Please contact your dealer for advice BEFORE returning any item. In many cases your dealer can help you solve a problem without return. Return postage is the responsibility of the user in all cases.

You MUST Submit a copy of original, dated receipt, and explanation of the problem with the return. Returned units should be examined by our tech department within 10 days of arrival, and contact made with the dealer to explain the findings.

‧ Include the following in a letter, enclosed with your return package:

PayPal Account:

Limits of Responsibility: We accept no responsibility for crash damage. It is impossible to determine for certain whether crash damage was the result of a radio system failure or pilot error. We accept no responsibility for crash damage occurring during the use of a radio controlled model. We accept no responsibility for improper installation of our products. Electrical polarity MUST be properly observed in hooking up electrical components. Fuses must be used with all electrical components where indicated (example: speed controllers).

Disclaimer and Limitation of Liability as to Products Sold

All TSH GAUI products are guaranteed against defects for the period of 30 days. EXCEPT AS EXPRESSLY STATED HEREIN, TSH GAUI makes no representations or warranties, either express or implied, of any kind with respect to products sold. EXCEPT AS EXPRESSLY STATED HEREIN, TSH GAUI expressly disclaims all warranties, express or implied, of any kind with respect to products sold on this site, including but not limited to, merchantability and fitness for a particular purpose. By placing an order, you agree that the sole and exclusive maximum liability to TSH GAUI arising from any product sold on the TSH GAUI sites shall be the price of the product ordered. In no event shall TSH GAUI, its directors, officers, employees and representatives be liable for special, indirect, consequential, or punitive damages related to product sold.

Except in respect of death or personal injury caused by TSH GAUI’s negligence, under no circumstances whatsoever shall TSH GAUI be liable to the buyer for any loss or damage whatsoever (including but not limited to loss of profit or the loss of any other form of financial or non-financial benefit; loss of use of or damage to any property; work stoppage; any special, indirect, incidental or consequential loss or damage; costs; expenses; and other claims for compensation), arising out of or in connection with the sale of any TSH GAUI product (including any misrepresentation (unless fraudulent); any breach of an implied or express warranty, condition or other term; or any breach of a common law duty), in an amount exceeding the price of the TSH GAUI product giving rise to the claim, except as expressly agreed in writing by TSH GAUI.

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