User Manual

ImmersionRC | EzUHF JR Module Manual Supplement

Firmware Upgrade

As with all EzUHF equipment, it is important that compatible firmware is installed on both the

transmitter, and the receiver.

The EzUHF JR module requires, at minimum, firmware version v1.48b. Receivers should be upgraded to

v1.48, freely downloaded from the ImmersionRC.com website.

Note: A small batch of transmitter modules shipped with v1.48a, these should be upgraded to v1.48b

before use.

To upgrade the firmware on the JR module, follow the below procedure:

1. Install the latest revision of ImmersionRC Tools on your Windows based PC

2. Remove the module from the radio

3. Switch the High/Low Power Switch to LO power mode

4. Hold down the failsafe/bind button, and connect the radio to a PC

5. Select the ‘EzUHF: Tx, 500mW, 2W, JR’ module from the list on the left

6. the ‘Program’ tab, and select ‘Upgrade Firmware’

7. Select the upgrade file ‘EzUHFFirmware_TxJRModule.fw’, and follow the prompts.

Settings

There are several settings which may be set while the EzUHF JR Transmitter is connected to the PC.

These include:

Frequency Band

The EzUHF system hops over many frequencies within a pre-set band. Each set of stick positions sent to

the model are sent on a different frequency, following a pseudo-random sequence.

The default band is 433-435MHz as the units are shipped.

It is important that the band matches between the Transmitter and Receiver.

Band selections available are:

431-433MHz

433-435MHz

435-437MHz

436-438MHz

430-450MHz Extreme Hopping

The UK version of the firmware doesn’t have the frequency band selection, and will default to the

hopping range legal within the UK, around 459MHz.