Avalon4 firmware updates below. Hardware versions (4.0 or 4.1) are labelled on the unit next to the LED display.
New firmware released for Avalon4 RPi/703N, Version: Canaan A4-20150119
Firmware Details:
RPi/703N Firmware
http://downloads.canaan-creative.com/software/avalon4/openwrt/20150119_1609/ChangeLog:
* Support automatic adjust voltage individually(Support on MM4.1, MM4.0(>401501-d17f4a10)).
* Support MM firmware upgrade through LuCI(Caution:Only for professional users!!!).
* Fix temperature display when it is < 0C.
* Fix WiFi cann't work on TL-WR703N.
* Add more mining mode.
* Update the module set_voltage method to one by one.
* Change localwork statistics from software to hardware.
Fengling
New MM firmware released for Avalon4, Hardware model: MM-4.0, Version: 401501-4778d610
Firmware Details:
http://downloads.canaan-creative.com/software/avalon4/mm/2015-01-19/ChangeLog:
* Support voltage adjustion by miners.
* Move the frequency table to CGMiner.
* Turn down LM32 CPU frequency from 100MHz to 50MHz.
* Update the ASIC clock configure method, more friendly with power supply module.
* Fix LED warning blink when get new stratum.
* Move the miner's Localwork statistics to Verilog HDL side.
* Fix negative temperature.
* Add new command for MM I2C TX FIFO reset.
Fengling