[silverzhao]

After some investigation, I've got to know how reset Read Timer on Kindle Touch finally.

KT has a file called:

/var/local/java/prefs/reader.pref

and its content in hex format is showed below, where you could see something to do with timer.

00000000  00 00 00 00 00 1a b1 26  02 00 00 00 00 00 00 00  |.......&........|
00000010  01 01 00 00 00 02 fe 00  00 10 74 69 6d 65 72 2e  |..........timer.|
00000020  64 61 74 61 2e 73 74 6f  72 65 00 00 fe 00 00 0b  |data.store......|
00000030  74 69 6d 65 72 2e 6d 6f  64 65 6c 01 00 00 00 01  |timer.model.....|
00000040  02 00 00 00 00 00 00 00  00 02 00 00 00 00 00 00  |................|
00000050  00 00 04 00 00 00 00 00  00 00 00 ff ff fe 00 00  |................|
00000060  18 72 65 61 64 65 72 2e  73 74 61 74 65 2e 70 72  |.reader.state.pr|
00000070  65 66 65 72 65 6e 63 65  73 fe 00 00 0a 66 6f 6e  |eferences....fon|
00000080  74 2e 70 72 65 66 73 03  00 00 05 73 65 72 69 66  |t.prefs....serif|
00000090  01 00 00 00 01 01 00 00  00 03 01 00 00 00 01 01  |................|
000000a0  ff ff ff ff 01 ff ff ff  ff 01 ff ff ff ff 01 ff  |................|
000000b0  ff ff ff 01 ff ff ff ff  ff 01 00 00 00 28 01 00  |.............(..|
000000c0  00 00 28 01 00 00 00 1e  01 00 00 00 00 00 00 ff  |..(.............|
000000d0

So to reset the reader timer, I just remove this file. After a reboot, you may train the reader timer again.