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+# interims write-up
+
+## mass flash event
+
+0. determine serial number from device
+0. extract MAC (8byte) from flash 0x74004? (found @ 0xFC0B, 8 bytes for MAC ?)
+0. infopage MAC (8byte) from eeprom 0x10
+1. backup 64k flash
+2. backup 1k eeprom infopage (calibration data and possible MAC)
+3. merge and flash new firmware image
+
+## minor additional
+
+- gpi max current for power
+- add espressif dev board 
+- simple power toggle
+- remote firmware update