If i was in your place (Thank god i am not), i would do the following:
1. Repay as much as i can through Gratuity fund. Sell my stuffs here to arrange remaining as much as i can.
2. Request my new employer to list their company with your bank
3. Request Family and friends to arrange for the remaining and last
4. Promise myself never to take loan from any institution/ Person/ henceforth.

If after following all above steps i could not manage to arrange money for the loan, then i will give up my new job and remain employed with old employer. May be this will be better for your future.