Or use 2 clothespins to hold down the buttons.I just did mine, it really is that easy. However I did struggle holding down buttons and plugging in battery, maybe I need to install a switch rather than just plugging and unplugging.
Thx it is so useful for me.yes you can, check out page 21 here
i think you've got a second or two to mash the buttons after connecting the battery, probably while it's still displaying the firmware info etc before it's got to the safe screenI just did mine, it really is that easy. However I did struggle holding down buttons and plugging in battery, maybe I need to install a switch rather than just plugging and unplugging.