Updater::exec

public function exec()
{
	if ($this->updater->canUpdateKernel())
	{
		$this->syncKernel('install/wizards/bitrix', 'wizards/bitrix');
		$this->syncKernel('install/templates', 'templates');
	}

	if ($this->updater->canUpdatePersonalFiles())
	{
		if (is_dir($this->updaterPath . '/install/public/bitrix24'))
		{
			if (is_dir($this->kernelPath . '/wizards/bitrix/bitrix24') || isModuleInstalled('bitrix24'))
			{
				if (!is_dir($this->kernelPath . '/wizards/bitrix/portal'))
				{
					CUpdateSystem::copyDirFiles($this->updaterPath.'/install/public/bitrix24', $this->documentRoot, $error);

					if (defined('BX_COMP_MANAGED_CACHE'))
					{
						global $CACHE_MANAGER;
						$CACHE_MANAGER->clearByTag('bitrix24_left_menu');
					}
				}
			}
		}

		if (is_dir($this->updaterPath . '/install/public/pub'))
		{
			CUpdateSystem::copyDirFiles($this->updaterPath.'/install/public/pub', $this->documentRoot.'/pub', $error);
		}

		if (!empty($this->params['personal']) && is_array($this->params['personal']))
		{
			if (is_dir($this->kernelPath . '/wizards/bitrix/portal'))
			{
				$this->syncPersonal('portal', $this->params['personal']);
			}
		}
	}

	if ($this->updater->canUpdateKernel())
	{
		foreach (array('portal', 'portal_clear') as $item)
		{
			if (is_dir($this->updaterPath . '/install/wizards/bitrix/'.$item))
			{
				CUpdateSystem::deleteDirFilesEx($this->updaterPath.'/install/wizards/bitrix/'.$item);
			}

			if (is_dir($this->kernelPath . '/modules/intranet/install/wizards/bitrix/'.$item))
			{
				CUpdateSystem::deleteDirFilesEx($this->kernelPath.'/modules/intranet/install/wizards/bitrix/'.$item);
			}
		}
	}
}