rkflashtool: some blocks aren't flashed to RK3066

[ildar]

I successfully flashed kernel.img several times to my RK3066-based chineese tablet.
But when I tried to flash system.img, it didn't correctly flashed some blocks:

$ /tmp/android-command-line/rkflashtool/rkflashtool w 0x0061A000 0x0CA496 < system.img
...
GOOD
$ /tmp/android-command-line/rkflashtool/rkflashtool r 0x0061A000 0x03 | cmp - system.img
says that 1025'th byte is different

The result was partially flashed partition (corrupt filesystem).
I started to think that NAND is exhausted. But I successfully flashed the system.img with RKAndroidTool.exe in Windows. So it looks like the rkflashtool bug.