Notice No20190307-14Notice Date07 Mar 2019
SubjectRelease of BOLT TWS ver. 78.00 - COMPULSORY Version


Trading members of the Exchange are hereby informed that new version of BOLT TWS ver. 78.00 shall be released & made live with effect from Monday, March 11, 2019. This new version shall be COMPULSORY version release for Trading in Equity, Equity Derivatives, Currency Derivatives and Commodity Derivatives segments.


Certain technical enhancements have been handled in the new version.


Download BOLT TWS ver. 78.00

All existing users of BOLT TWS 77.00 & above will have to upgrade to BOLT TWS ver. 78.00, by selecting the ver. 78.00 in the TWS Version tab of Auto-Download Interface on start of BOLT TWS. New version of BOLT TWS ver. 78.00 shall be available for download on Friday, March 8th, 2019, from 7:00 pm onwards. Old versions of BOLT TWS shall not be supported from Monday 11th March 2019 onwards.


The new version can also be downloaded from the Exchange website. Steps to download BOLT TWS version from website are given below –

1)      Browse web-link -   to download the version.

2)      Click on the link – “”

3)      ‘Software Update’ will be downloaded

4)      Unzip the file

5)      Read the document ‘How to use this files.doc’. As per the instructions given in the document, please copy the respective files where BOLT TWS is installed.


As informed via circular no. 20190306-32, 20190306-33, 20190306-34 and 20190306-35 dated March 6th, 2019, Exchange has scheduled mock trading session for Equity, Equity Derivatives, Currency Derivatives and Commodity segments on Saturday, March 9th, 2019. All users are requested to upgrade the BOLT TWS version and actively participate in the mock trading session to ensure smooth trading on Monday, March 11th, 2019.


In case of any queries or further clarification, trading members may kindly get in touch with the Helpdesk or IML Tech Support team as follows –


TWS users

TWS Users

TWS Helpdesk– 022-30594000 /

IML users (Third party empaneled vendors & in-house system developers)

IML Tech Support

022-2272 8053/



For and on behalf of BSE Ltd.,



Tejash Somaiya

Manojkumar Samant

Dy. General Manager

Senior Manager

Trading Development

Trading Development



March 07, 2019