AR1688 Software   Software API and most common upgrade files can be found here. Please email us if you can not find what you need. Keep in mind that following files are NOT available here in public: 1. Upgrade files for special devices not compatible with our standard hardware reference design 2. Upgrade files for devices never in mass production status 3. Rarely used upgrade files for common mass production devices, for example an Italian version of software 4. Special OEM upgrade files for common mass production devices 5. Page0 safe mode recovery upgrade files, we do not recommend users to upgrade page0 unless it is 100% necessary SDCC compiler is included in each API package, located in sdcc\bin.   New software development guide, FAQ and an old guide (Information of this guide was updated in 2007 and for reference only. For example, old files like mkweball.bat and related actions mentioned is not needed in current software). Standard design SIP user manual, standard design IAX2 user manual.   Standard software release: 0.62 software updated on May 29, 2013. Other old version: 0.60(2012.12.15) 0.58(2012.8.8) 0.56(2012.1.28) 0.54(2011.8.23) 0.52(2011.3.25) 0.50(2011.2.5) 0.48(2010.10.22) 0.46(2010.5.7) 0.44(2009.10.1)   Test software: AR1688 0.63 test software. Other old test software: 0.61 0.59 0.57 0.55 0.53 0.51 0.49   Software API snapshots.