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tasmota / mgos32-to-tasmota32

ESP32 Mongoose OS to Tasmota32 OTA updates for Shelly
GNU General Public License v3.0
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Question regarding (un)-locked bootloader on Shelly Plus 1 and Plus 1PM #84

Open gilex-dev opened 6 hours ago

gilex-dev commented 6 hours ago

Hi, first of all THANK YOU SO MUCH for making it possible to easily flash tasmota to these devices. I am thinking about using these devices with other Platform IO projects but the part about the locked bootloader freaked me out. I read that it uses an eFuse and cannot really be disabled and only allows signed binaries in that state. Now I am confused, because tasmota clearly works but is not signed (or is it???). Would I brick the ESP32 if I now tried to flash a custom script or did the conversion process somehow truly unlock the bootloader?

Jason2866 commented 5 hours ago

The bootloader is replaced with the Autoconfiguration step. Until now Shelly has not locked the devices to flash other firmwares. Just when the bootloader is not replaced the device gets soft bricked. Currently this is no issue since Shelly has not blocked flashing via serial (esptool.py). But only Shelly knows if this will be possible in future.

gilex-dev commented 4 hours ago

Thanks for the quick and helpful answer. Yeah, let's hope they will never do that. I only see the need for encrypted / locked down IOT devices in a professional environment. But that probably not Shelly's targeted audience with these products.