I have been gathering the statistics of PW3 jb over half a year (here and at the 4pda.ru).
To increase chances for successful jb of the new PW3 with 5.8.11 firmware:
- choose English (US) at the first start
- do not register the device (if have registered - make the factory reset)
- apply 5.8.9.0.1 initial factory firmware
Even in compliance with the above there is some possibility (about 10%) of bricking the device.
If the downgrading failed - do not use DO_FACTORY_RESTORE, it will finally brick the device.
Just put the official update.bin to the root and reboot.
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