Originally Posted by Booxtor
Devices are actually of same hardware.
The difference is the scope of delivery - M92 "black pearl edition" from polish Arta Tech (also calling themselves Onyx Europe) will be delivered without cover and wall charger adapter. They sell the accessories separately for approx 50 EUR (19,9 EUR adapter and 29 EUR Cover)
It has also a licensed feature (TTS Ivona), which makes it impossible to update devices sold by that company with our free software and their firmware version can not be installed to regular M92.
Don't try to install software from Arta Tech to your M92 - it will not work.
Booxtor is right - the firmware is not compatible.
You can not update M92 "Black Pearl" with Booxtors FREE firmware, but you can update it with FREE firmware from onyx-boox.com.
Additionaly to Ivona TTS you will be able to synchronise your M92 "Black Pearl" Edition with Google Drive cloud storage and will have a choice if you wish to see metadata for files (title, etc.) or file names (best if you like to work on documents printed to PDF from MsOffice or so).
If you wish you can choose a cover you wish (also genuine leather one) and still the price will be interesting :-)
Regards from Onyx Europe