HP Calculators Timeline » HP 49g+ » HP49G+ rom upgrade » HP49G+ Firmware Version: 1.22 - 3.45

HP49G+ Firmware Version: 1.22 - 3.45

Firmware: 3.45
ROM Version: 1.22
File Name: hp49g122.bin

Download (File Size: 730 KB)

This package contains a new version of the HP49G+ Rom (1.22).
This version corrects a couple of bugs,
most noticeably reduces significantly the power consumption in OFF mode,
increasing dramatically the battery life.

Note: In order to upgrade your calculator,
you must have the HP49G+ Connectivity kit and the HP49G+ USB drivers installed on your PC,
or a Secure Digital card reader and a secure Digital card formatted using the FAT file system (not FAT32).


To install the new ROM:

1. Download the package from the Hewlett-Packard web site
2. Install the package by running the program
3. Note the directory in which you install the files (the default directory is the same directory than the HP49G+ connectivity kit)
4. By default, the connectivity kit should be started at the end of the installation process
5. Ensure that you have good battery in the calculator

There are 2 solutions to install the ROM:

1) Using the HP49G+ connectivity kit
2) Using a Secure digital card

Using the HP49G+ connectivity kit

1. The connectivity kit should have been started at the end of the installation process for the HP49+ Rom Update package. If not, start it. Please note that the connectivity kit and the drivers must have been installed.

2. Select HPx9G+ in the Connect using combo box in the connectivity kit, if this option is not available, turn on your calculator, unplug and replug the USB cable and try to select the HPx9G+ option, if still not available, ensure that all connections are OK and that the drivers are correctly installed.

3. In the ROM menu, select Download Calculator ROM

4. On the calculator, Press and hold the + and - Button and press on the RESET
button using a paper clip or other blunt object

5. Release the RESET button, wait 2 second and release the + and - keys.
Your calculator screen should display the update and self test menu.

6. Press on 1 (Update ROM CODE)

7. Unplug and replug the USB cable

8. Press on 1 (Update from USB)

9. on the connectivity kit, validate the dialog box (press OK or Enter)
and select the file: hp49g22.bin that should be located in the
%programfile%\hewlett-packard\conn4x directory
(if not, consult your note from point 3 of the installation process to find the directory) and validate.

10. A download dialog box should appear monitoring the download process. This should take around 1 minute

11. When the download is finish (the calculator displays: Update Finish, waiting for reset), press the reset button, your calculator has been upgraded.


Using a SD card

1. Copy the files: hp49g22.bin and update.scp that should be located in the
%programfile%\hewlett-packard\conn4x directory (if not, consult your note
from point 3 of the installation process to find the directory)
on a SD card formatted in using the FAT format.

2. On the calculator, Press and hold the + and - Button and press on the RESET button
using a paper clip or other blunt object

3. Release the RESET button, wait 2 second and release the + and - keys.
Your calculator screen should display the update and self test menu.

4. Insert the SD card (upside down) in the clacualtor

5. Press on 1 (Update ROM CODE)

6. Press on 2 (Update from SD CARD)

7. The calculator should start updating the ROM (you will see flashing
messages telling you about the update process). This should take around 1 minute

8. When the upgrade is finish (the calculator displays: Update Finish, waiting for reset), press the reset button, your calculator has been upgraded.

Updated On: 15.02.19

  1. On 28-Jun-2020, Jan Verkade wrote: 
    An attempt to download HP49+ firmware via the link on subject pages brings me to: [URL] www.educalc.net/images/1062484.imx
    Noting relevant to download there; please advise
    Your reply to Jan Verkade
    • On 28-Jun-2020, Peter Tong replied: 
      Hi Jan. Thank you for writing. There was a configuration error on our web server. I have reset it and the download link is working now. Sorry about that.
      Your reply to Peter Tong

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