Designing to prevent Lost Bootloader Issue without battery

[Adam42]

Hello Particle forums,

Using the Electron in the field I have seen a number of devices come back with the Lost Bootloader problem.

Firmware lost Electron .... Better on later versions/hardware

Hello Vitesze! Thank you I was wondering if 7.0 was a better match. Thanks for the quick reply Our devices don’t use a the battery and instead use a large capacitor. I’m worried if the E-Series doesn’t have this improved, getting it replaced will cost more as its soldered to the board. (Can’t just replace the Electron). Lets see if anyone has thoughts on how this works on the E-Series.

Electron stopped working?

Just checking in here to say that I also have managed to kill a few Electrons over the months by letting the battery run empty. I tried every suggested fix but couldn’t fix any of them. By looking at the posts in this thread, the best practice to avoid this is to not allow a brownout to occur. Unfortunately, I use a LiSOCl2-battery setup which doesn’t have the typical discharge curve that a LiPo has, making the voltage level hard to monitor. Essentially, it goes from a steady 3.6V almost straig…

In my application we use a truck's 12V power supply and use a 1000 UF cap per the recommendation in the Datasheet. So we don't have a battery we can use to keep above 20%. Adding a battery is not possible due to cost.

https://docs.particle.io/datasheets/electron-(cellular)/electron-datasheet/#vin

I was wondering if there was a recommendation for how I can design my board such that this Lost Firmware does not happen in the first place? I have full control over the design of the board.

Thanks!