Improper flashing or using a ROM meant for the "A37f" (Indian variant) on an "A37fw" (Global/International) can sometimes cause partition errors, though they are usually cross-compatible. 6. Conclusion

Flashing a custom ROM is a technical process that and carries a risk of "bricking" (rendering unusable) your device.

The Oppo A37fw is a mid-range smartphone released in 2016, featuring:

Yes, if you can still enter EDL (Emergency Download Mode). You’ll need a Qualcomm QDLoader driver and a stock firmware file. Search “Oppo A37fw unbrick guide” for detailed steps.