How to do a Sonoff memory upgrade

Jonathan Oxer, over at SuperHouseTV, has been running a series of video episodes on the Sonoff product line recently and I really recommend his latest.  The theme of the video is Sonoff-specific hints and hint #1 is how to upgrade the memory chip in a Sonoff.  Jonathan does a great job of demonstrating how to remove the chip with nothing more than “a big, old, clunky soldering iron” and a screwdriver.  A picture is worth a thousand words, so you need to multiply that by whatever the frame rate of a YouTube video is.  Watch it!  It’s worth it.


2 thoughts on “How to do a Sonoff memory upgrade

  1. I trashed two Sonoff Basics last night, pulling up the pads with the memory chips. I was careful, but pulling them up is too easy to do. I tried running wires, but it didn’t work. Now I have a couple of donors.

    I finally found an easier way on the third and fourth. Since I don’t have a tiny pair of diagonal clippers, I used an X-Acto knife and carefully cut the leads on the old memory chip, after which cleaning up the remaining pieces of leads took only seconds. I may not be able to reuse the chip, but the ease, safety, and time savings is more than worth it.


    • Chip,

      Thanks for letting us know about your unfortunate experience with Jonathan’s “big iron” method. I used to do board rework for a computer manufacturer and we had all sorts of fancy de-soldering tools, but before the advent of hot air we always just clipped the legs and junked the old chip anyway; it was a lot safer than taking the chance of lifting a track (those were the days when just the CPU took up a 15″ square, very expensive PCB).

      In the case of the Sonoff, I doubt that there will be many people actually re-using the original chip anyway, so your “sacrificial” method is a winner for anyone who doesn’t have a really big, hot iron, too. I’d highly recommend a small pair of “flush cut” side cutters, though.

      Best of luck with future upgrades!



Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s