Removing old SSID from Dreame D10s Pro

[snowkat]

Hello!

This isn't a support inquiry, so much a solution for a problem I figured others might run into. Since this was mostly trial-and-error, I can't promise there aren't any side effects to this. And while I figure it goes without saying, running this command with your current SSID will kill your connection to the robot. Nonetheless, I hope it helps!

Long story short, the following command works to remove an old SSID from the Dreame D10s Pro's secure NVM if needed:

manager_ap.sh del_ap 'OldSSID' && reboot

... where OldSSID should be replaced with the SSID. A reboot is required for the change to take effect.

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The longer story: I tried changing my the SSID my robot connects to using the method in the vacuum's manual, but it kept connecting to the original SSID. When checking /data/config/wifi/wpa_supplicant.conf, I found network blocks for both SSIDs. Since the old SSID was listed first, I'm guessing wpa_supplicant would connect to it first. It might also have been a race condition: since both SSIDs are being broadcast by the same AP, the old SSID could easily just have gotten to the robot first.

Unfortunately, #1362 didn't help here, as /data/config/wifi/ap_config.json doesn't exist on my model. I wasn't able to find any other references to this sort of issue.

After some troubleshooting, I was able to figure out this model uses secure NVM (/dev/sst_storage?) to store the AP info. Thankfully, /usr/bin/manager_ap.sh uses /mnt/misc/dm as a flag to detect if secure NVM or the flash filesystem is used for AP config.