The theory

sudo gainroot

cd /home/user/.java/.userPrefs/org/peterbjornx/whatsapp/storage/
leafpad prefs.xml

and write :

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE map SYSTEM "http://java.sun.com/dtd/preferences.dtd">
<map MAP_XML_VERSION="1.0">
<entry key="CC" value="country code"/>
<entry key="CONTACTS" value=""/>
<entry key="IMEI" value="IMEI number"/>
<entry key="LOGIN" value="ph# with country code"/>
<entry key="PHONENR" value="PH# without country code"/>
<entry key="REGSTEP" value="1"/>
</map>

I use winscp (pc) and openssh server n900

thanks mohammed muid