How to Install or Update PortaPack Mayhem Firmware

[Pavel]

Short answer: Use a release package intended for the exact PortaPack and HackRF target, back up settings or captures, and keep firmware plus companion files from the same release. Mixing files across releases is a common cause of boot and application problems.

Before you start​

• Confirm the exact HackRF and PortaPack hardware revision, then match the firmware image and application files to that target.
• Perform transmit tests into a rated 50-ohm dummy load through suitable attenuation and filtering, not into an antenna.

Step-by-step method​

1. Step 1: Identify the hardware target from its board and display revision, then read that release's supported-target notes. Charge or externally power the unit reliably before flashing.
2. Step 2: Download one complete release package, verify the archive extracts without errors and use the included updater or documented flashing method. Do not substitute a similarly named binary from another target.
3. Step 3: After firmware flashing, update the microSD companion files from the same release while preserving a backup of personal captures and settings. Safely eject the card.
4. Step 4: Boot, confirm the displayed release and test receive, touch or controls, SD access and HackRF USB mode. Keep the previous known-good release available for recovery.

Concrete example​

If the device boots new firmware but applications or icons are missing, the microSD files may still belong to the previous release. Replacing only the firmware binary does not update those companion resources.

How to judge the result​

A successful update boots without error, reports the intended version, recognizes the correct hardware and passes both standalone PortaPack and computer-connected HackRF tests.

What to record​

• For receive gain, start with RF amp off, IF gain 16 dB and baseband gain 16 dB, then change IF and baseband gradually while watching distortion and noise.
• Verify USB stability at a modest sample rate before attempting wider captures.
• A successful firmware update boots the correct target, reports the intended release and retains stable USB communication.

Common mistakes​

• Changing several hardware, software or RF variables at once, which removes the controlled comparison needed to identify the cause.
• Treating one autoscaled screenshot or one unusually good result as proof without recording the settings and repeating the test.
• Flashing firmware for a different display or board revision can produce a blank screen or unusable controls even when the radio hardware itself is healthy.

Final check​

Power-cycle the HackRF or PortaPack and repeat the controlled test. Confirm the reported firmware, USB stability and RF safety path before treating the result as complete.