[Galaxy S 5 Android Development (Snapdragon)] _alexndr:
The only reason why I have removed link to BOJ2 DevBase is that i does not match to the topic (DevBase 2.0). You can dirty flash POK1 over any BOxx without any problems :good:

Thanks! :)

Strange conclusion as "in the meantime" I have downloaded DTM firmware and IMO it supports VoLTE:

<?xml version="1.0" encoding="UTF-8" ?>
<SamsungMobileFeauture>
<Version>ED001</Version>
<Country>GERMANY</Country>
<CountryISO>DE</CountryISO>
<SalesCode>DTM</SalesCode>
<FeatureSet>
<CscFeature_LockScreen_DisplayPlmn>TRUE</CscFeature_LockScreen_DisplayPlmn>
<CscFeature_Setting_OperatorSpecificPreConfigKeyString>NatCo</CscFeature_Setting_OperatorSpecificPreConfigKeyString>
<CscFeature_Launcher_EnableViewByAlphabetAsDefault>TRUE</CscFeature_Launcher_EnableViewByAlphabetAsDefault>
<CscFeature_VoiceCall_EnableVmsNumberAsDefaultInCallForwarding>TRUE</CscFeature_VoiceCall_EnableVmsNumberAsDefaultInCallForwarding>
<CscFeature_Message_DisableSmsToMmsConversionByTextInput>TRUE</CscFeature_Message_DisableSmsToMmsConversionByTextInput>
<CscFeature_Message_EnableReplyAll>TRUE</CscFeature_Message_EnableReplyAll>
<CscFeature_Message_EnableCheckFDNContactWhenMMSSend>TRUE</CscFeature_Message_EnableCheckFDNContactWhenMMSSend>
<CscFeature_Message_KeepSmilPlayerToolbar>TRUE</CscFeature_Message_KeepSmilPlayerToolbar>
<CscFeature_Message_ReplaceLabelOnRequestedStatus>TRUE</CscFeature_Message_ReplaceLabelOnRequestedStatus>
<CscFeature_Message_EnableMmsUaUapAutoCreate>ggsm-tmo-ua</CscFeature_Message_EnableMmsUaUapAutoCreate>
<CscFeature_Email_UseFixedSmtpPortAs>25</CscFeature_Email_UseFixedSmtpPortAs>
<CscFeature_Email_EnablePopupWhenChangingSyncSchedule>TRUE</CscFeature_Email_EnablePopupWhenChangingSyncSchedule>
<CscFeature_Web_SetUserAgent>TMO</CscFeature_Web_SetUserAgent>
<CscFeature_Web_SetUAProfile>http://wap.samsungmobile.com/uaprof/%s.xml</CscFeature_Web_SetUAProfile>
<CscFeature_Web_OverrideUserAgent>TRUE</CscFeature_Web_OverrideUserAgent>
<CscFeature_Web_DisableRedirectionChooser>TRUE</CscFeature_Web_DisableRedirectionChooser>
<CscFeature_Web_EnableAutoSimHomeUrlInProfile>TRUE</CscFeature_Web_EnableAutoSimHomeUrlInProfile>
<CscFeature_GMS_DisableSetupWizard>FALSE</CscFeature_GMS_DisableSetupWizard>
<CscFeature_GMS_SetClientIDBaseMs>android-tmobile-{country}</CscFeature_GMS_SetClientIDBaseMs>
<CscFeature_GMS_SetClientIDBaseGmm>android-samsung</CscFeature_GMS_SetClientIDBaseGmm>
<CscFeature_GMS_SetClientIDBaseYt>android-samsung</CscFeature_GMS_SetClientIDBaseYt>
<CscFeature_GMS_SetClientIDBaseAm>android-tmobile-{country}</CscFeature_GMS_SetClientIDBaseAm>
<CscFeature_Wifi_EnableShowPasswordAsDefault>TRUE</CscFeature_Wifi_EnableShowPasswordAsDefault>
<CscFeature_Wifi_UseDefaultSecurityAs>WPA/PSK</CscFeature_Wifi_UseDefaultSecurityAs>
<CscFeature_Wifi_PriorityRuleAs>PrivateFirst</CscFeature_Wifi_PriorityRuleAs>
<CscFeature_Wifi_RemovableDefaultAP>TRUE</CscFeature_Wifi_RemovableDefaultAP>
<CscFeature_SyncML_DiscardCpSecurityType4>Userpin,Usernetwpin,None</CscFeature_SyncML_DiscardCpSecurityType4>
<CscFeature_SyncML_EnableCpValidiationSecurityType4>Userpin,Netwpin,Usernetwpin</CscFeature_SyncML_EnableCpValidiationSecurityType4>
<CscFeature_SyncML_DeleteCpAfterTryingToInstall>true</CscFeature_SyncML_DeleteCpAfterTryingToInstall>
<CscFeature_SyncML_DisableMultipleApnCp>false</CscFeature_SyncML_DisableMultipleApnCp>
<CscFeature_SyncML_OverwriteApn4SameProfileName>false</CscFeature_SyncML_OverwriteApn4SameProfileName>
<CscFeature_RIL_ForceConnectMMS>TRUE</CscFeature_RIL_ForceConnectMMS>
<CscFeature_RIL_EnableBIP>true</CscFeature_RIL_EnableBIP>
<CscFeature_Music_TranslateUnknownTitle>TRUE</CscFeature_Music_TranslateUnknownTitle>
<CscFeature_SyncML_DiscardInvalidNetwpinCp>true</CscFeature_SyncML_DiscardInvalidNetwpinCp>
<CscFeature_NFC_StatusBarIconType>DEFAULT</CscFeature_NFC_StatusBarIconType>
<CscFeature_NFC_EnableSecurityPromptPopup>all</CscFeature_NFC_EnableSecurityPromptPopup>
<CscFeature_NFC_SetSecureEventType>GSMA_v40</CscFeature_NFC_SetSecureEventType>
<CscFeature_NFC_DefStatus>ON</CscFeature_NFC_DefStatus>
<CscFeature_SmartcardSvc_ConfigInitConnection>SIMIO</CscFeature_SmartcardSvc_ConfigInitConnection>
<CscFeature_Framework_InvalidateFlag4SplitTouch>FALSE</CscFeature_Framework_InvalidateFlag4SplitTouch>
<CscFeature_Framework_DisableForceClosePopup>true</CscFeature_Framework_DisableForceClosePopup>
<CscFeature_Launcher_TotalPageCount>3</CscFeature_Launcher_TotalPageCount>
<CscFeature_Launcher_DefaultPageNumber>1</CscFeature_Launcher_DefaultPageNumber>
<CscFeature_Framework_ReplaceDataTypeIconAsOpBrand>TMH</CscFeature_Framework_ReplaceDataTypeIconAsOpBrand>
<CscFeature_RIL_EnableLaunchBrowser>TRUE</CscFeature_RIL_EnableLaunchBrowser>
<CscFeature_RIL_ApnControlByModem>TRUE</CscFeature_RIL_ApnControlByModem>
<CscFeature_RIL_EnableDTM>TRUE</CscFeature_RIL_EnableDTM>
<CscFeature_SmartcardSvc_HideTerminalCapability>eSE</CscFeature_SmartcardSvc_HideTerminalCapability>
<CscFeature_mCommerce_WalletMgrConfig>Disable</CscFeature_mCommerce_WalletMgrConfig>
<CscFeature_Sip_DisableAutoCorrection_DA>false</CscFeature_Sip_DisableAutoCorrection_DA>
<CscFeature_Sip_ApplyAutoCorrectionPatent>true</CscFeature_Sip_ApplyAutoCorrectionPatent>
<CscFeature_Web_DisableNetworkLinkPrediction>true</CscFeature_Web_DisableNetworkLinkPrediction>
<CscFeature_Web_DefBookmarkFolderName>Chrome,Telekom</CscFeature_Web_DefBookmarkFolderName>
<CscFeature_RIL_SsRoutingPolicy>ps-always</CscFeature_RIL_SsRoutingPolicy>
<CscFeature_RIL_UssdRoutingPolicy>cs</CscFeature_RIL_UssdRoutingPolicy>
<CscFeature_RIL_BlockUssdDuringVolteCall>true</CscFeature_RIL_BlockUssdDuringVolteCall>
<CscFeature_RIL_E911RoutingPolicy>qmisrchmdm</CscFeature_RIL_E911RoutingPolicy>
<CscFeature_RIL_ForceConnectIMS>TRUE</CscFeature_RIL_ForceConnectIMS>
<CscFeature_RIL_AttachIMSAPN>TRUE</CscFeature_RIL_AttachIMSAPN>
<CscFeature_RIL_DefaultApn4LTE>ims</CscFeature_RIL_DefaultApn4LTE>
<CscFeature_RIL_PDPRetryMechanism4>DTR</CscFeature_RIL_PDPRetryMechanism4>
<CscFeature_RIL_SupportImsService>TRUE</CscFeature_RIL_SupportImsService>
<CscFeature_RIL_SupportVolte>TRUE</CscFeature_RIL_SupportVolte>
<CscFeature_RIL_SupportSrvcc>TRUE</CscFeature_RIL_SupportSrvcc>
<CscFeature_RIL_SrvccRel>10</CscFeature_RIL_SrvccRel>
<CscFeature_RIL_ConfigApnForHideDataIcon>xcap</CscFeature_RIL_ConfigApnForHideDataIcon>
<CscFeature_IMS_EnableIMS>true</CscFeature_IMS_EnableIMS>
<CscFeature_IMS_EnableRCSe>true</CscFeature_IMS_EnableRCSe>
<CscFeature_IMS_EnableVoLTE>true</CscFeature_IMS_EnableVoLTE>
<CscFeature_RIL_ConfigAlwaysOnApn>xcap</CscFeature_RIL_ConfigAlwaysOnApn>
<CscFeature_IMS_ConfigRcsFeatures>PARTIAL_BRANDED</CscFeature_IMS_ConfigRcsFeatures>
<CscFeature_IMS_FrameworkVersion>5.0</CscFeature_IMS_FrameworkVersion>
<CscFeature_Setting_EnableEditingIpVersionType>TRUE</CscFeature_Setting_EnableEditingIpVersionType>
<CscFeature_Setting_HideApnList>IMS</CscFeature_Setting_HideApnList>
<CscFeature_Setting_IncludeApn4SwUpdate>true</CscFeature_Setting_IncludeApn4SwUpdate>
<CscFeature_RIL_ConfigSpecialPdpFlag>im_cn</CscFeature_RIL_ConfigSpecialPdpFlag>
<CscFeature_RIL_ConfigWbamr>2G</CscFeature_RIL_ConfigWbamr>
<CscFeature_Web_SetQuickAccessAs>DT_DE</CscFeature_Web_SetQuickAccessAs>
<CscFeature_NFC_ConfigOperatorSettingUI>DT</CscFeature_NFC_ConfigOperatorSettingUI>
<CscFeature_NFC_ConfigAdvancedSettings>Disable</CscFeature_NFC_ConfigAdvancedSettings>
<CscFeature_NFC_DefaultCardModeConfig>DH:UICC</CscFeature_NFC_DefaultCardModeConfig>
<CscFeature_Camera_CameraFlicker>50hz</CscFeature_Camera_CameraFlicker>
</FeatureSet>
</SamsungMobileFeauture>