[Bada Software and Hacking General] b.kubica:
we missed something, that files are not mandatory

<Files>
<File URL="navigon/data/Advisor.nfs" Size="263935"/>
<File URL="navigon/data/CountryProfiles.nfs" Size="253089"/>
<File URL="navigon/data/DrawSettings.nfs" Size="741023"/>
<File URL="navigon/data/MapDrawer_High.nfs" Size="2510548"/>
<File URL="navigon/data/NavigonRealityView_EU.nfs" Size="45928710"/>
<File URL="navigon/data/NaviKernel.nfs" Size="2715527"/>
<File URL="navigon/data/poicats.nfs" Size="374077"/>
<File URL="navigon/data/sat_EU.nfs" Size="8123926"/>
<File URL="navigon/data/TMC.nfs" Size="33050185"/>
<File URL="navigon/sound/ara-ARA_ogg.nfs" Size="1980954"/>
<File URL="navigon/sound/bul-BGR_ogg.nfs" Size="1681198"/>
<File URL="navigon/sound/cze-CZE_ogg.nfs" Size="1945523"/>
<File URL="navigon/sound/dan-DNK_ogg.nfs" Size="1615898"/>
<File URL="navigon/sound/dut-BEL_ogg.nfs" Size="1796515"/>
<File URL="navigon/sound/dut-NLD_ogg.nfs" Size="1857804"/>
<File URL="navigon/sound/eng-GBR_Bob_def_sound.nfs" Size="2589631"/>
<File URL="navigon/sound/eng-GBR_Coleen_def_sound.nfs" Size="3089830"/>
<File URL="navigon/sound/eng-GBR_Ewan_def_sound.nfs" Size="2822873"/>
<File URL="navigon/sound/eng-GBR_Gwendolyn_def_sound.nfs" Size="3065900"/>
<File URL="navigon/sound/eng-GBR_Latika_def_sound.nfs" Size="2728776"/>
<File URL="navigon/sound/eng-GBR_ogg.nfs" Size="1631069"/>
<File URL="navigon/sound/eng-GBR_Pete_def_sound.nfs" Size="2746624"/>
<File URL="navigon/sound/eng-USA_ogg.nfs" Size="1734139"/>
<File URL="navigon/sound/fin-FIN_ogg.nfs" Size="2242532"/>
<File URL="navigon/sound/fre-CAN_ogg.nfs" Size="1829047"/>
<File URL="navigon/sound/fre-FRA_ogg.nfs" Size="1901308"/>
<File URL="navigon/sound/ger-DEU_Gerd_def_sound.nfs" Size="2102235"/>
<File URL="navigon/sound/ger-DEU_Inge_def_sound.nfs" Size="2277678"/>
<File URL="navigon/sound/ger-DEU_Kalle_def_sound.nfs" Size="2147401"/>
<File URL="navigon/sound/ger-DEU_Mandy_def_sound.nfs" Size="1736045"/>
<File URL="navigon/sound/ger-DEU_Maria_def_sound.nfs" Size="1701452"/>
<File URL="navigon/sound/ger-DEU_Markus_def_sound.nfs" Size="1743261"/>
<File URL="navigon/sound/ger-DEU_ogg.nfs" Size="2155328"/>
<File URL="navigon/sound/gre-GRC_ogg.nfs" Size="1896795"/>
<File URL="navigon/sound/hun-HUN_ogg.nfs" Size="1872586"/>
<File URL="navigon/sound/ita-ITA_ogg.nfs" Size="1848953"/>
<File URL="navigon/sound/lav-LVA_ogg.nfs" Size="3277395"/>
<File URL="navigon/sound/lit-LTU_ogg.nfs" Size="1958882"/>
<File URL="navigon/sound/nob-NOR_ogg.nfs" Size="1893801"/>
<File URL="navigon/sound/pol-POL_ogg.nfs" Size="2244013"/>
<File URL="navigon/sound/por-BRA_ogg.nfs" Size="2127332"/>
<File URL="navigon/sound/por-PRT_ogg.nfs" Size="2036652"/>
<File URL="navigon/sound/rum-ROU_ogg.nfs" Size="1870893"/>
<File URL="navigon/sound/rus-RUS_ogg.nfs" Size="2112169"/>
<File URL="navigon/sound/scr-HRV_ogg.nfs" Size="1933508"/>
<File URL="navigon/sound/slo-SVK_ogg.nfs" Size="2697744"/>
<File URL="navigon/sound/slv-SVN_ogg.nfs" Size="2181009"/>
<File URL="navigon/sound/spa-ESP_ogg.nfs" Size="2257274"/>
<File URL="navigon/sound/spa-MEX_ogg.nfs" Size="2016814"/>
<File URL="navigon/sound/swe-SWE_ogg.nfs" Size="1810247"/>
<File URL="navigon/sound/tur-TUR_ogg.nfs" Size="1731773"/>
<File URL="navigon/poi/ALL_POIWARNER_EU.pom" Size="692675"/>
<File URL="navigon/poi/POIWARNER_EU.nfs" Size="13882"/>
<File URL="navigon/map/Albania.map" Size="780721" ismap="true" ISO3CountryCode="ALB"/>
<File URL="navigon/map/Andorra.map" Size="357710" ismap="true" ISO3CountryCode="AND"/>
<File URL="navigon/map/Austria.map" Size="46139701" ismap="true" ISO3CountryCode="AUT"/>
<File URL="navigon/map/Belarus.map" Size="1200445" ismap="true" ISO3CountryCode="BLR"/>
<File URL="navigon/map/Belgium.map" Size="30226929" ismap="true" ISO3CountryCode="BEL"/>
<File URL="navigon/map/Bosnia and Herzegovina.map" Size="1353560" ismap="true" ISO3CountryCode="BIH"/>
<File URL="navigon/map/Bulgaria.map" Size="20567062" ismap="true" ISO3CountryCode="BGR"/>
<File URL="navigon/map/Croatia.map" Size="16356031" ismap="true" ISO3CountryCode="HRV"/>
<File URL="navigon/map/Czech Republic.map" Size="70497698" ismap="true" ISO3CountryCode="CZE"/>
<File URL="navigon/map/Denmark.map" Size="22028469" ismap="true" ISO3CountryCode="DNK"/>
<File URL="navigon/map/Estonia.map" Size="16437252" ismap="true" ISO3CountryCode="EST"/>
<File URL="navigon/map/Finland.map" Size="107805792" ismap="true" ISO3CountryCode="FIN"/>
<File URL="navigon/map/France.map" Size="328726340" ismap="true" ISO3CountryCode="FRA"/>
<File URL="navigon/map/FYROM.map" Size="2151742" ismap="true" ISO3CountryCode="MKD"/>
<File URL="navigon/map/Germany.map" Size="226969504" ismap="true" ISO3CountryCode="DEU"/>
<File URL="navigon/map/Gibraltar.map" Size="254981" ismap="true" ISO3CountryCode="GIB"/>
<File URL="navigon/map/Greece.map" Size="55661652" ismap="true" ISO3CountryCode="GRC"/>
<File URL="navigon/map/Hungary.map" Size="28286904" ismap="true" ISO3CountryCode="HUN"/>
<File URL="navigon/map/Iceland.map" Size="12316027" ismap="true" ISO3CountryCode="ISL"/>
<File URL="navigon/map/Isle of Man.map" Size="618594" ismap="true" ISO3CountryCode="IMN"/>
<File URL="navigon/map/Italy.map" Size="176458599" ismap="true" ISO3CountryCode="ITA"/>
<File URL="navigon/map/Kosovo.map" Size="898916" ismap="true" ISO3CountryCode="KOS"/>
<File URL="navigon/map/Latvia.map" Size="15547006" ismap="true" ISO3CountryCode="LVA"/>
<File URL="navigon/map/Liechtenstein.map" Size="378243" ismap="true" ISO3CountryCode="LIE"/>
<File URL="navigon/map/Lithuania.map" Size="12175151" ismap="true" ISO3CountryCode="LTU"/>
<File URL="navigon/map/Luxemburg.map" Size="2572052" ismap="true" ISO3CountryCode="LUX"/>
<File URL="navigon/map/Malta.map" Size="1088050" ismap="true" ISO3CountryCode="MLT"/>
<File URL="navigon/map/Moldova.map" Size="867386" ismap="true" ISO3CountryCode="MDA"/>
<File URL="navigon/map/Monaco.map" Size="292378" ismap="true" ISO3CountryCode="MCO"/>
<File URL="navigon/map/Montenegro.map" Size="1658041" ismap="true" ISO3CountryCode="MNE"/>
<File URL="navigon/map/Netherlands.map" Size="45282719" ismap="true" ISO3CountryCode="NLD"/>
<File URL="navigon/map/Norway.map" Size="53707409" ismap="true" ISO3CountryCode="NOR"/>
<File URL="navigon/map/Poland.map" Size="74945960" ismap="true" ISO3CountryCode="POL"/>
<File URL="navigon/map/Portugal.map" Size="58418687" ismap="true" ISO3CountryCode="PRT"/>
<File URL="navigon/map/Republic of Ireland.map" Size="20340266" ismap="true" ISO3CountryCode="IRL"/>
<File URL="navigon/map/Romania.map" Size="23105205" ismap="true" ISO3CountryCode="ROU"/>
<File URL="navigon/map/San Marino.map" Size="461320" ismap="true" ISO3CountryCode="SMR"/>
<File URL="navigon/map/Serbia.map" Size="8178898" ismap="true" ISO3CountryCode="SRB"/>
<File URL="navigon/map/Slovakia.map" Size="28881499" ismap="true" ISO3CountryCode="SVK"/>
<File URL="navigon/map/Slovenia.map" Size="14268161" ismap="true" ISO3CountryCode="SVN"/>
<File URL="navigon/map/Spain.map" Size="170234083" ismap="true" ISO3CountryCode="ESP"/>
<File URL="navigon/map/Sweden.map" Size="99343322" ismap="true" ISO3CountryCode="SWE"/>
<File URL="navigon/map/Switzerland.map" Size="37178223" ismap="true" ISO3CountryCode="CHE"/>
<File URL="navigon/map/Ukraine.map" Size="49431000" ismap="true" ISO3CountryCode="UKR"/>
<File URL="navigon/map/United Kingdom.map" Size="149712343" ismap="true" ISO3CountryCode="GBR"/>
<File URL="navigon/map/Vatican City.map" Size="251064" ismap="true" ISO3CountryCode="VAT"/>
</Files>

more important could be some *.ini or other files not mentioned in that list

I modified navigon to download only important files IMHO, (without unnecessary maps). For Poland it should be

<Files>
<File URL="navigon/data/Advisor.nfs" Size="263935"/>
<File URL="navigon/data/CountryProfiles.nfs" Size="253089"/>
<File URL="navigon/data/DrawSettings.nfs" Size="741023"/>
<File URL="navigon/data/MapDrawer_High.nfs" Size="2510548"/>
<File URL="navigon/data/NavigonRealityView_EU.nfs" Size="45928710"/>
<File URL="navigon/data/NaviKernel.nfs" Size="2715527"/>
<File URL="navigon/data/poicats.nfs" Size="374077"/>
<File URL="navigon/data/sat_EU.nfs" Size="8123926"/>
<File URL="navigon/data/TMC.nfs" Size="33050185"/>
<File URL="navigon/sound/pol-POL_ogg.nfs" Size="2244013"/>
<File URL="navigon/poi/ALL_POIWARNER_EU.pom" Size="692675"/>
<File URL="navigon/poi/POIWARNER_EU.nfs" Size="13882"/>
<File URL="navigon/map/Poland.map" Size="74945960" ismap="true" ISO3CountryCode="POL"/>
</Files>

still no luck but we're close I think :)