samsung galaxy s gt-19000 is not starting

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http://android.stackexchange.com – I try to install an update by updating it manually after installation my phone stuck on samsung logo. I visit to a mobile repair shop they ask me that in this repair may take 3 days .after three days when i come they ask me that it can't work. Before repair clockword mode is starting after repair coming force upload by key pressing. What should i do? (HowTos)