Solution : https://service.sap.com/sap/support/notes/867633 (SAP Service marketplace login required)
Key words :
replace upgrade tool, silent mode upgrades, client upgrade target, client upgrade tool, <sapmobilerootdir>\bin folder, mobile upgrade package, upgrade window automatically, upgrade window, <sapmobilerootdir>\bin, silent upgrade
Related Notes :
| 513291 | SAP CRM 4.0 Mobile Client Component: Collective Note |