To change the firmware on a new ProStart (model year 2020 and up):

  1. Connect the ProStart to a computer.
  2. It will behave like a thumb drive (or any other USB mass storage device).
  3. Open the ProStart, and then open the Firmware folder.
  4. Remove the existing .hex from the Firmware folder.
  5. Drag and drop the new .hex firmware file into the folder.
  6. Unplug your ProStart from the computer.
  7. Turn your ProStart off and then back on again.
  8. Wait for a moment for the firmware update to begin.
  9. You will know the firmware is updating when the ProStart counts from 0 to 100 on screen.
  10. When it hits 100, the update is complete and the ProStart will begin operating normally, using the new firmware.

Note: You do not need to open a .hex file or assign a default program to open a .hex file to change the firmware on your ProStart.



Release date: 5/17/2023

What's new?

  • Configuration settings survive firmware upgrades.
  • Hard Reset config option (you have to turn it on in the config menu and then power cycle for it to take effect).
  • Fixes bar graph stuck on shift bug.
  • Removes decimal place from numeric heel angle in bonus screen.

Download here: prsG_46.hex


Release date: 7/29/2022

What's new?

  • Adds timer configuration options (Reset | Rolling | Count Up)
  • Adds GPS Off or SHIFT Mode

Download here: prsG_42.hex


Release date: 7/1/2022

What's new?

  • Fixes MacBook / iPad connection bug.

Download here: prsG_41.hex


Release date: 4/4/2022

What's new?

  • Bonus Screen. A fully customizable mode allowing the user to numerically display any data available on the ProStart. Bar graph output is also configurable.

Download here: prsG_40.hex


Release date: 10/26/2021

What's new?

  • Reorders configuration menus. Learn more on The Speed Read
  • Adds local magnetic declination auto look up (GPS signal required).
  • Changes bow offset increments in 0.1 meter.
  • Changes shift tracking bar graph to 3° increments.

Download here: prsG_35.hex


Release date: 9/14/2021

What's new?

  • Shift Tracking! Adds option to set Bar Graph in Race Mode to shift tracking.
  • Adds heading offset to configuration menu to rotate compass if ProStart is mounted off axis.
  • Adds new configuration menu for Distance to Line Precision.
  • Adds scrolling text to configuration menus.
  • Fixes 1 minute timer bug.
  • Watch the tutorial video:

Download here: prsG_31.hex


Release date: 8/5/2021

What's new?

  • Adds option to disable start line function for classes with restrictive rules.
  • Changes the default backlight to OFF.
  • Pacing guides on for last two minutes of countdown timer.
  • Fixes bug that resets user configurations to factory defaults when ProStart is powered off.
  • Watch the tutorial video:

Download here: prsG_27.hex


Release date: 3/10/2021

What's new?

  • Fixes bug that would cause charging animation to continue when charge was complete.
  • Shows battery voltage on top line of LCD when charging. 3.6V is empty, 4.2V is full.
  • Makes USB pitchfork icon flash when wall-cube fast charging is taking place.

Download here: prsG_23.hex


Release date: 2/25/2021

What's new?

  • Distance-to-Line is displayed with 0.1 meters when you are between 99.9 to -9.9 meters from the line.

Download here: prsG_22.hex

If you have a pre-2020 ProStart contact Velocitek support for firmware options.