Attiny85: burn bootloader error

[rtek1000]

Hello,

At try burn bootloader to Attiny85@16MHZ (internal PLL; 4V3 BOD):

avrdude: Device signature = 0x1e930b
avrdude: erasing chip
avrdude: reading input file "{bootloader.unlock_bits}"
avrdude: invalid byte value ({bootloader.unlock_bits}) specified for immediate mode
avrdude: read from file '{bootloader.unlock_bits}' failed

I'm using a Nano board v3.0 as Arduino ISP (Arduino ISP version 04m3) from samples code menu.

The code from https://github.com/damellis/attiny/tree/ide-1.6.x works fine, but has not 16MHZ PLL.

Thank you!

[rtek1000]

PS:
Installed from boards manager with:
https://dl.dropboxusercontent.com/u/2807353/femtoCore/package_femtocow_attiny_index.json