Typo3 Default language label and flag - typo3

Question

I'm working with Typo3 v6.1 and trying to set up multi-language site. The problem is that I can not change the default language label. What am I doing wrong?
According to this and this, here is my TypoScript config
###################################################
# language handling
###################################################
mod.SHARED {
defaultLanguageFlag = de
defaultLanguageLabel = Deutsch
}
config {
sys_language_uid = 0
language = de
locale_all = de_DE.UTF-8
htmlTag_langKey = de_DE
}
[globalVar = GP:L = 1]
config {
sys_language_uid = 1
language = en
locale_all = en_GB.UTF-8
htmlTag_langKey = en_GB
}
[end]
So language settings work and I can localize pages, but default language (uid = 0) is still displayed as Default and not Deutsch. I thought that maybe I'm using old settings and I tried debugging through Typo3 core, looks like these settings still in use in several places, here is one of them:
#/typo3/sysext/backend/Classes/Configuration/TranslationConfigurationProvider.php
$languageIconTitles[0] = array(
'uid' => 0,
'title' => strlen($modSharedTSconfig['properties']['defaultLanguageLabel']) ? $modSharedTSconfig['properties']['defaultLanguageLabel'] . ' (' . $GLOBALS['LANG']->sl('LLL:EXT:lang/locallang_mod_web_list.xlf:defaultLanguage') . ')' : $GLOBALS['LANG']->sl('LLL:EXT:lang/locallang_mod_web_list.xlf:defaultLanguage'),
'ISOcode' => 'DEF',
'flagIcon' => strlen($modSharedTSconfig['properties']['defaultLanguageFlag']) ? 'flags-' . $modSharedTSconfig['properties']['defaultLanguageFlag'] : 'empty-empty'
);
The problem is that Typo3 seems skipping load of my setting (though I do see them in Object browser).
After that I tried also on older version of Typo3 - 4.7.12 and it didn't work out too (((
UPDATE: According to biesior's answer I need to add that code to PageTS config. That works for both Typo3 versions (4.* and 6.*) but also important to know this concepts. And there is a possibility to change the default (i.e. global) PageTS config on behalf of extension:
# /ext_localconf.php of your typo3 v6.* extension:
\TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addPageTSConfig(
'mod.SHARED {
defaultLanguageFlag = de.gif
defaultLanguageLabel = Deutsch
}'
);
or
# /ext_localconf.php of your typo3 v4.* extension:
t3lib_extMgm::addPageTSConfig(
...
);

Answer 1

This code need to be placed in PageTS (of the root page) not in the TypoScript template
mod.SHARED {
defaultLanguageFlag = de
defaultLanguageLabel = Deutsch
}
Just edit properties of the root page, go to the Resources tab, and paste it to Page TSConfig field. Don't forget to clear configuration cache after saving.

Answer 2

You should put the mod.shared stuff in page ts (edit root page properties) not setup ts.
/Brian