sepoy mutiny

I am studying more about the Rebellion in India against the British East India company starting in 1857. As well as other wars involving the British Empire around that time in such as the First Anglo Afghan War, the First and Second Anglo-Sikh wars, Crimean war, Anglo-Persian War, 2nd Opium war...

IOTL the Sepoy Mutiny was a huge but ultimately disorganized revolt that, lacking a clear leader or even a common goal, was eventually defeated in detail after the British retook Delhi in September 1857. Suppose that the rebels get a few lucky breaks in an alternate timeline, leading to this...

Suppose that the 1857 Sepoy Mutiny or whatever is TTL's equivalent of it is much more successful than OTL, completely expelling the British East India Company from the Indian Subcontinent by the end of the 1850s. The how is irrelevant here, only the end result and its consequences. So? India is...

Like it says on the tin. What PODs, from, say, 1830 onward could help the rebels score more victories or at least hold out against the British for longer? Two good ones could be keeping the Delhi arsenal from being blown up and getting John Nicholson out of the picture somehow, since he saved...