How can I update my Bangkok Bank passbook while being outside Thailand?

The user seeks assistance in updating their Bangkok Bank passbook while currently outside Thailand. They request a trustworthy individual to help, as it requires using an ATM in Thailand to make the update. Several commenters caution against sending personal banking documents to strangers and suggest alternatives like contacting the bank directly or updating it upon return to Thailand. Some express willingness to assist, while others raise concerns about the implications of trusting someone with such important documents.