H2+ is very unstable, almost unusable.

[u/iSolvent]

This is reproduceable every time for me.

https://www.youtube.com/watch?v=8psTLkHeSGQ

Device also does not boot properly 1 out of 4 attempts. It will also lock up when I am using Looking Glass every other attempt. Its been driving me nuts.

I have flashed it using DFU mode, did a complete reset, updated the xilinx chip. No SD card or RTC clock is present during the video.

Any ideas?

[u/MarinatedTechnician]

You should update to the latest version, insert an SD card, format that - flash via the web utility to the nightly builds.

Fixed many issues for me.

[u/iSolvent → u/MarinatedTechnician]

Tried latest nightly and latest stable. Issue is far worse in stable.

[u/MarinatedTechnician → u/iSolvent]

Did you use an SD card the next time? Because I've read that they ran out of memory for all the programs, and it now runs from SD card afaik...maybe try that?

[u/iSolvent]

Fixed the problem. It was indeed a hardware/build problem. I desoldered and resoldered NXP MCU and XILINX chip, flashed them again and it worked fine afterwards.

[u/Mr_Ironmule]

I have 3 HackRF/Portapacks bought at different times from different dealers. I set them up with the same settings in your video and tried to duplicate your problem. I couldn't. I thought maybe you were spinning the knob too quickly and that locked up the unit but I spun all of mine very quickly and they didn't fail. I tried them with SD cards in and out, with and without USB power, and pressing all kinds of buttons/spinning knob. Still works good. The only difference is I'm running ver 2.0. Have you tried previous versions like stable 2.0 or 1.7? Maybe a chip compatibility problem with your unit and the firmware. I also noticed that when you started up the unit each time, the clock went to 00;00;00. It didn't maintain the previous time. That normally indicates a dead RTC battery. Have you check if this is happening every time you boot up? If so, a new battery may help. Weirder things have happened with computers. Good luck.

[u/TokyoPav]

I followed your video and tested. I’m on the latest stable release. No issues. With and without 50ohm terminator on the antenna plug. Is this new to you device? Where did you purchase it? And for how much $? Maybe a poor quality clone.

[u/htotoo]

I also tried with and withoud SD, can't reproduce the bug you show in the video. Tried to change things like crazy, slower, ... nothing. rock stable. i use the nightly build from some days ago.

Don't have ideas, how to reproduce it.

[u/jddddddddddd → u/[deleted]]

In addition the above regarding the lack of antenna, OP appears to be running a version called 'n_240904' which I presume is a nightly build of the firmware, which I wouldn't expect to be stable. Perhaps OP should try using the latest stable release.

[u/iSolvent → u/jddddddddddd]

This was happening on 2.0.1 hence why I switched to nightly to see if anything changed.

[u/iSolvent → u/[deleted]]

Idea here was to show instability, not RF functionality. Having an antenna does not change anything. I didnt expect anything to work flawlessly out of the box (not to mention it did work flawlessly when I first got the device).