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Old 02-09-2013, 10:50 PM   #119
ProDigit
Karmaniac
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Posts: 2,553
Karma: 11499146
Join Date: Oct 2008
Location: Miami FL
Device: PRS-505, Jetbook, + Mini, +Color, Astak Ez Reader Pro, PPW1, Aura H2O
Quote:
Originally Posted by DuckieTigger View Post
Credit to Alan (aka alansplace) for making me look into this on an unrelated topic. Thank you, you made me hardware-hack my PW today.

Do not worry, all that is needed is a small magnet and any way to strap it to the PW so that it can be easily removed / reattached. That is it on hardware needed.

Now how to turn the light OFF? Follow these 2 steps:

1) disable screensaver in search bar by entering and hitting return after this:
Code:
~ds
2) attach your magnet so PW would normally go to sleep with wake / sleep function

Ta Da, the light is off.

Few things you need to know:

- you can't enter screensaver sleep mode by closing the cover or pushing the button shortly - nothing will happen other than the light turns off when using cover (that is where the magnet above comes in)

- you can still put PW to sleep, but you must remove the magnet, push power button for few seconds (about 4 maybe) to enter white screen sleep mode. Again, light must be turned on, or PW won't enter white screen sleep mode

- the screensaver will not come on after 10 minutes (thought I mention that as ~ds disables that)

- the light can be turned on and off by simply removing / attaching magnet

- to return normal operation a restart is necessary (menu->settings, then menu->restart) - screensaver is back , attaching the magnet sleeps device again

- last not least: does not require Jailbreak or USB Network
Happy Hacking



p.s.: Thank you Amazon for this undocumented feature.

Update: See post #80 or directly this post for a nice guide on what magnet to use and where to put it. That post is for waking / sleeping with a cover. So you need to adjust accordingly to make it work for turning the light off. See picture #5 there for placement.
Using this method, PW also does not show password screen when starting it up again.
How's battery performing with ~ds?
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