Yes... Use other installation... now... download RU image. Use 7zip to extract the installation (yes, you can). Download ENG image. Extract it from same way. Now, copy EXTROM.bin and FLASH.bin from ENG extraction files to RU files (replace). Then run ACER_EUU.exe . This is it ... and one more thing - if it show error for wrong version before "Key failure", edit the version.txt and put high version than yours.
Sorry for my bad english.
/if you can not success, i will upload for you ready installation/
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