On this page, you will find the official link to get the Oppo A53s CPH2135 Stock ROM (Firmware, Flash File). The Stock ROM package comes as a zip file, and it contains Firmware, USB Driver, Flash Tool, How-to Flash Guide.
The Realme Stock ROM can update the device, downgrade the device, fix the device facing bootloop issue, or any software issue. You can use the following link to get the ROM on your computer.
Firmware Name: Oppo_CPH2135_PU_11_A.45_200920_RFT.zip
Firmware Size: 9.29 GB
How to Flash: Follow Guidelines
[*] Flash Tool: If you are inclined to have a copy of the latest version of Realme Flash Tool, then head over to Realme Flash Tool page.
[*] Backup: We recommend taking a backup of your data from the device, as flashing or installing the ROM using the Flash Tool will permanently delete your data from the device.
[*] Original firmware: Our firmware is 100% authentic and is officially released by Oppo Mobility LLC. We have scanned the above firmware using the Kaspersky Antivirus before sharing it online.