[Galaxy S I9000 Themes and Apps] rizdroid:
You're right. The one in Check Fus database (PGU) is Claro's firmware:

<?xml version="1.0" encoding="UTF-8" ?>
<CustomerData>
<GeneralInfo>
<CSCEdition>ED022</CSCEdition>
<Country>Guatemala</Country>
<CountryISO>GT</CountryISO>
<Region>LA</Region>
<SalesCode>PGU</SalesCode>
<NbNetworkInfo>6</NbNetworkInfo>
<NetworkInfo>
<MCCMNC>70401</MCCMNC>
<NetworkName>Claro_GT</NetworkName>
<SPName>Claro</SPName>
</NetworkInfo>
<NetworkInfo>
<MCCMNC>70601</MCCMNC>
<NetworkName>Claro_SV</NetworkName>
<SPName>Claro</SPName>
</NetworkInfo>
<NetworkInfo>
<MCCMNC>71021</MCCMNC>
<NetworkName>Claro_NI_NEN</NetworkName>
<SPName>Claro</SPName>
</NetworkInfo>
<NetworkInfo>
<MCCMNC>710730</MCCMNC>
<NetworkName>Claro_NI_NEN</NetworkName>
<SPName>Claro</SPName>
</NetworkInfo>
<NetworkInfo>
<MCCMNC>708001</MCCMNC>
<NetworkName>Claro_HN</NetworkName>
<SPName>Claro</SPName>
</NetworkInfo>
<NetworkInfo>
<MCCMNC>71403</MCCMNC>
<NetworkName>Claro_PA</NetworkName>
<SPName>Claro</SPName>
</NetworkInfo>
</GeneralInfo>
<Settings>
<Main>
<Security>
<UnlockCnt>5</UnlockCnt>
<NbNetworkLock>8</NbNetworkLock>
<NetworkLock>70401</NetworkLock>
<NetworkLock>70601</NetworkLock>
<NetworkLock>710730</NetworkLock>
<NetworkLock>71021</NetworkLock>
<NetworkLock>708001</NetworkLock>
<NetworkLock>71403</NetworkLock>
<NetworkLock>33402</NetworkLock>
<NetworkLock>71203</NetworkLock>
</Security>
<Network>
<NbSOSNumber>2</NbSOSNumber>
<SOSNumber>911</SOSNumber>
<SOSNumber>112</SOSNumber>
</Network>
<Phone>
<DefLanguage>spanish_latin</DefLanguage>
<DefLanguageNoSIM>spanish_latin</DefLanguageNoSIM>
<T9Enabling>disable</T9Enabling>
<DateTimeFormat>
<TimeFormat>12h</TimeFormat>
</DateTimeFormat>
<UnknownSource>on</UnknownSource>
</Phone>
<Display>
<NbWallpaper>2</NbWallpaper>
<Wallpaper src="/Customer/PGU/Wallpaper/wallpaper_claro_1.jpg" width="1280" height="1280" default="true">
<Position>1</Position>
<FileType>JPG</FileType>
</Wallpaper>
<Wallpaper src="/Customer/PGU/Wallpaper/wallpaper_claro_2.jpg" width="1280" height="1280">
<Position>2</Position>
<FileType>JPG</FileType>
</Wallpaper>
</Display>
</Main>
<Contact>
<SavePosition>sim</SavePosition>
<NbPreInstalledContact>1</NbPreInstalledContact>
<PreInstalledContact>
<TelName>Plugger</TelName>
<TelNum>9798</TelNum>
</PreInstalledContact>
</Contact>
<Messages>
<NbVoicemail>5</NbVoicemail>
<Voicemail>
<NetworkName>Claro_GT</NetworkName>
<TelNum>*80</TelNum>
</Voicemail>
<Voicemail>
<NetworkName>Claro_SV</NetworkName>
<TelNum>*80</TelNum>
</Voicemail>
<Voicemail>
<NetworkName>Claro_NI_NEN</NetworkName>
<TelNum>*855</TelNum>
</Voicemail>
<Voicemail>
<NetworkName>Claro_HN</NetworkName>
<TelNum>*80</TelNum>
</Voicemail>
<Voicemail>
<NetworkName>Claro_PA</NetworkName>
<TelNum>*111</TelNum>
</Voicemail>
<SMS>
<CellBroadcast>on</CellBroadcast>
</SMS>
<MMS>
<MmsReceiving>
<Home>auto</Home>
<Roaming>manual</Roaming>
</MmsReceiving>
</MMS>
</Messages>
<Browser>
<NbBookmark>13</NbBookmark>
<Bookmark>
<NetworkName>Claro</NetworkName>
<Editable>yes</Editable>
<Index>1</Index>
<BookmarkName>Portal Móvil</BookmarkName>
<URL>http://wap.ideasclaro.com</URL>
</Bookmark>
<Bookmark>
<NetworkName>Claro</NetworkName>
<Editable>yes</Editable>
<Index>2</Index>
<BookmarkName>Mi Claro</BookmarkName>
<URL>http://wap.miclaro.ideasclaro.com</URL>
</Bookmark>
<Bookmark>
<NetworkName>Claro</NetworkName>
<Editable>yes</Editable>
<Index>3</Index>
<BookmarkName>iPromociones</BookmarkName>
<URL>http://wap.ipromociones.ideasclaro.com</URL>
</Bookmark>
<Bookmark>
<NetworkName>Claro</NetworkName>
<Editable>yes</Editable>
<Index>4</Index>
<BookmarkName>MSNGR</BookmarkName>
<URL>http://wap.messenger.ideasclaro.com</URL>
</Bookmark>
<Bookmark>
<NetworkName>Claro</NetworkName>
<Editable>yes</Editable>
<Index>5</Index>
<BookmarkName>Plugger</BookmarkName>
<URL>http://wap.plugger.ideasclaro.com</URL>
</Bookmark>
<Bookmark>
<NetworkName>Claro</NetworkName>
<Editable>yes</Editable>
<Index>6</Index>
<BookmarkName>Imk</BookmarkName>
<URL>http://wap.ims.ideasclaro.com</URL>
</Bookmark>
<Bookmark>
<NetworkName>Claro</NetworkName>
<Editable>yes</Editable>
<Index>7</Index>
<BookmarkName>iJuegos</BookmarkName>
<URL>http://wap.ijuegos.ideasclaro.com</URL>
</Bookmark>
<Bookmark>
<NetworkName>Claro</NetworkName>
<Editable>yes</Editable>
<Index>8</Index>
<BookmarkName>iJuegos HD</BookmarkName>
<URL>http://wap.iHD.ideasclaro.com</URL>
</Bookmark>
<Bookmark>
<NetworkName>Claro</NetworkName>
<Editable>yes</Editable>
<Index>9</Index>
<BookmarkName>iApps</BookmarkName>
<URL>http://wap.iapps.ideasclaro.com</URL>
</Bookmark>
<Bookmark>
<NetworkName>Claro</NetworkName>
<Editable>yes</Editable>
<Index>10</Index>
<BookmarkName>iDeportes</BookmarkName>
<URL>http://wap.ideportes.ideasclaro.com</URL>
</Bookmark>
<Bookmark>
<NetworkName>Claro</NetworkName>
<Editable>yes</Editable>
<Index>11</Index>
<BookmarkName>iVideo</BookmarkName>
<URL>http://wap.videos.ideasclaro.com</URL>
</Bookmark>
<Bookmark>
<NetworkName>Claro</NetworkName>
<Editable>yes</Editable>
<Index>12</Index>
<BookmarkName>iClaro</BookmarkName>
<URL>http://wap.iclaro.ideasclaro.com</URL>
</Bookmark>
<Bookmark>
<NetworkName>Claro</NetworkName>
<Editable>yes</Editable>
<Index>13</Index>
<BookmarkName>Manual de usuario</BookmarkName>
<URL>http://www.samsung.com/m-manual/common</URL>
</Bookmark>
</Browser>
<Connections>
<NbProfileHandle>5</NbProfileHandle>
<ProfileHandle>
<NbNetProfile>2</NbNetProfile>
<NetworkName>Claro_GT</NetworkName>
<ProfBrowser>INTERNET CLARO</ProfBrowser>
<ProfMMS>MMS CLARO</ProfMMS>
</ProfileHandle>
<ProfileHandle>
<NbNetProfile>2</NbNetProfile>
<NetworkName>Claro_SV</NetworkName>
<ProfBrowser>INTERNET CLARO</ProfBrowser>
<ProfMMS>MMS CLARO</ProfMMS>
</ProfileHandle>
<ProfileHandle>
<NbNetProfile>2</NbNetProfile>
<NetworkName>Claro_NI_NEN</NetworkName>
<ProfBrowser>INTERNET</ProfBrowser>
<ProfMMS>MMS</ProfMMS>
</ProfileHandle>
<ProfileHandle>
<NbNetProfile>2</NbNetProfile>
<NetworkName>Claro_HN</NetworkName>
<ProfBrowser>Internet Claro</ProfBrowser>
<ProfMMS>MMS Claro</ProfMMS>
</ProfileHandle>
<ProfileHandle>
<NbNetProfile>2</NbNetProfile>
<NetworkName>Claro_PA</NetworkName>
<ProfBrowser>WEB Claro</ProfBrowser>
<ProfMMS>MMS Claro</ProfMMS>
</ProfileHandle>
<NbProfile>10</NbProfile>
<Profile>
<NetworkName>Claro_GT</NetworkName>
<Editable>yes</Editable>
<ProfileName>INTERNET CLARO</ProfileName>
<URL>http://wap.ideasclaro.com</URL>
<Auth>normal</Auth>
<Protocol>http</Protocol>
<MTUSize>1500</MTUSize>
<PSparam>
<APN>internet.ideasclaro</APN>
</PSparam>
</Profile>
<Profile>
<NetworkName>Claro_GT</NetworkName>
<Editable>yes</Editable>
<ProfileName>MMS CLARO</ProfileName>
<URL>http://mms.ideasclaro.com:8002</URL>
<Auth>normal</Auth>
<Protocol>http</Protocol>
<MTUSize>1500</MTUSize>
<Proxy>
<EnableFlag>on</EnableFlag>
<ServAddr>216.230.133.66</ServAddr>
<Port>8080</Port>
</Proxy>
<PSparam>
<APN>mms.ideasclaro</APN>
</PSparam>
</Profile>
<Profile>
<NetworkName>Claro_SV</NetworkName>
<Editable>yes</Editable>
<ProfileName>INTERNET CLARO</ProfileName>
<URL>http://wap.ideasclaro.com</URL>
<Auth>normal</Auth>
<Protocol>http</Protocol>
<MTUSize>1500</MTUSize>
<PSparam>
<APN>internet.ideasclaro</APN>
</PSparam>
</Profile>
<Profile>
<NetworkName>Claro_SV</NetworkName>
<Editable>yes</Editable>
<ProfileName>MMS CLARO</ProfileName>
<URL>http://mms.ideasclaro.com:8002</URL>
<Auth>normal</Auth>
<Protocol>http</Protocol>
<MTUSize>1500</MTUSize>
<Proxy>
<EnableFlag>on</EnableFlag>
<ServAddr>216.230.133.66</ServAddr>
<Port>8080</Port>
</Proxy>
<PSparam>
<APN>mms.ideasclaro</APN>
</PSparam>
</Profile>
<Profile>
<NetworkName>Claro_NI_NEN</NetworkName>
<Editable>yes</Editable>
<ProfileName>INTERNET</ProfileName>
<URL>http://wap.ideasclaro.com</URL>
<Auth>normal</Auth>
<Protocol>http</Protocol>
<MTUSize>1500</MTUSize>
<PSparam>
<APN>web.emovil</APN>
<UserId>webemovil</UserId>
<Password>webemovil</Password>
</PSparam>
</Profile>
<Profile>
<NetworkName>Claro_NI_NEN</NetworkName>
<Editable>yes</Editable>
<ProfileName>MMS</ProfileName>
<URL>http://10.6.32.27/servlets/mms</URL>
<Auth>normal</Auth>
<Protocol>http</Protocol>
<MTUSize>1500</MTUSize>
<Proxy>
<EnableFlag>on</EnableFlag>
<ServAddr>10.6.32.2</ServAddr>
<Port>8080</Port>
</Proxy>
<PSparam>
<APN>mms.emovil</APN>
<UserId>mmsemovil</UserId>
<Password>mmsemovil</Password>
</PSparam>
</Profile>
<Profile>
<NetworkName>Claro_HN</NetworkName>
<Editable>yes</Editable>
<ProfileName>Internet Claro</ProfileName>
<URL>http://wap.ideasclaro.com</URL>
<Auth>normal</Auth>
<Protocol>http</Protocol>
<MTUSize>1500</MTUSize>
<PSparam>
<APN>web.megatel.hn</APN>
<UserId>webmegatel</UserId>
<Password>webmegatel</Password>
</PSparam>
</Profile>
<Profile>
<NetworkName>Claro_HN</NetworkName>
<Editable>yes</Editable>
<ProfileName>MMS Claro</ProfileName>
<URL>http://10.6.32.27/servlets/mms</URL>
<Auth>normal</Auth>
<Protocol>http</Protocol>
<MTUSize>1500</MTUSize>
<Proxy>
<EnableFlag>on</EnableFlag>
<ServAddr>10.6.32.2</ServAddr>
<Port>8080</Port>
</Proxy>
<PSparam>
<APN>mms.megatel.hn</APN>
<UserId>mmsmegatel</UserId>
<Password>mmsmegatel</Password>
</PSparam>
</Profile>
<Profile>
<NetworkName>Claro_PA</NetworkName>
<Editable>yes</Editable>
<ProfileName>WEB Claro</ProfileName>
<URL>http://www.claro.com.pa/wap/claro.wml</URL>
<Auth>normal</Auth>
<Protocol>http</Protocol>
<MTUSize>1500</MTUSize>
<PSparam>
<APN>web.claro.com.pa</APN>
<UserId>CLAROWEB</UserId>
<Password>CLAROWEB</Password>
</PSparam>
</Profile>
<Profile>
<NetworkName>Claro_PA</NetworkName>
<Editable>yes</Editable>
<ProfileName>MMS Claro</ProfileName>
<URL>http://www.claro.com.pa/mms/</URL>
<Auth>normal</Auth>
<Protocol>http</Protocol>
<MTUSize>1500</MTUSize>
<Proxy>
<EnableFlag>on</EnableFlag>
<ServAddr>10.240.3.129</ServAddr>
<Port>8799</Port>
</Proxy>
<PSparam>
<APN>mms.claro.com.pa</APN>
<UserId>CLAROMMS</UserId>
<Password>CLAROMMS</Password>
</PSparam>
</Profile>
</Connections>
</Settings>
</CustomerData>

I tried the hidswver you provided and it's working.