HARRIER BOOK 2

TML Harrier Infotainment Reflashing

and Replacement Spec

TITLE :

TML Harrier Infotainment Reflashing and Replacement Spec

Doc No:

Date

: 10

Dec 18

Revision

: 0.3

Page: 12 of 15

Prepared : Pritam B

Checked: Phani Kumar J

Approved: Anand Sikchi

This specification is the exclusive property of Tata Motors Limited. Without their consent it may not be

reproduced or given to third parties

The above specifications are subject to change and therefore suppliers

are requested to refer the latest one.

CONTROLLED COPY FOR RESTRICTED CIRCULATION

4. Whenever user ‘Turn ON’ the infotainment system, Silver Box should check for valid

software version combination between SB, BP and DISPLAY and prompt user for software

update in case of mismatch. This check shall be completed within 500 msec.

5. Whenever the Software update is interrupted, Silver Box should ensure failsafe such that

Infotainment system should prompt user to reflash again.

6. When USB is removed during Reflash, system will show a non-interactive popup to user to

insert USB again and resumes the software update process automatically if USB is inserted

again. In this case software reflash will start from beginning.

7. SB shall ensure Software Update is not initiated in IGN ON state (Prompt user to turn IGN

OFF and initiate Reflash in One Hour Mode). Also, Infotainment system shall restart after

completion of the software update. During Reflash, if user turn ON IGN, then SW update

should continue. Same way, during reflash, SB should ignore all triggers which makes SB to

enter into other states of Power Modes (e.g. when Driver door open or Key out, SB should

not enter into EW mode).

However during entire process of software reflash of three

modules always text message like “ Do NOT turn ON the IGN” should be displayed

8. SW reflash operation shall not disturb any parameters which can be written at TML end of

line (EOL).

9. In case when user select file for validation when IGN ON “Turn IGN OFF to Download

Software” pop-up shall be displayed.