Samsung devices come with a unique boot mode called Download Mode which is very similar to Fastboot Mode on some devices with unlocked bootloaders. Heimdall is a cross-platform, open source tool for interfacing with Download Mode on Samsung devices. The preferred method of installing a custom recovery is through this boot mode. Rooting the stock firmware is neither recommended nor necessary.
TWRP custom recovery
so we find some stable custom rom for this purpose it ill halt a little bit but yet no bugs or crash forund so you can flash it easily. link is below download it as well for custom recovery link of that provided as well. best of luck in brick wer are not responsible. Android version 6 or 7 maybe. flash using twrp custom reovery methode and files also provided
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| Cynogen mod for samsung tab 2 10.1 p5100 |
TWRP custom recovery
Tutorial how to flash