Not able to install Os 3.2.4 update(india) for rooted device.

I live in india. When I update my device via system update, 270 mb file is getting downloaded but while installing it loading TWRP recoveey mode and on rebooting os version is still in 3.2.1. My device is rooted. Is there any specific flashable zips for indian version available or please guide me if any other solution is available.Not able to find specific solution. I dont wont to loss datas for this small incremental update

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