No I read this from a blog on IRI only. There was a different strip mark on a 5H loco. However all the loco will undergo upgradation to 5H, because it is just a software update.
Important Note:This website NEVER solicits for Money or Donations. Please beware of anyone requesting/demanding money on behalf of IRI. Thanks. Disclaimer: This website has NO affiliation with the Government-run site of Indian Railways. This site does NOT claim 100% accuracy of fast-changing Rail Information. YOU are responsible for independently confirming the validity of information through other sources.