Hi Guys its Rootjunky here and i put together some files for you. Note that this system images is based on custom build version BLU_R0010UU_V6.4_GENERIC and if you use it on other builds you make have problems.
VIDEO TUTORIAL
How to remove amazon ads and ota updates
Steps
1. Download SP-Flash-Tool-Remove-Amazon-Ads-plus-ota-updates.zip
2. Extract the SP-Flash-Tool-Remove-Amazon-Ads-plus-ota-updates.zip to your desktop. Note 7zip is great to extract files.
3. lauch Flash_tool.exe
4. select scatter-loading and browser to load MT6735_Android_scatter_R1_HD_NO_ADS.txt
5. click download button to start.
6. now plug your phone into the computer. to boot the device to preloader and start the flash. You can do it two ways: 1. power off the phone and flash will start or 2. From a powered off stat power on the device while plugged into the computer. either way will start the sp flash tool.
7. once the flash is complete you can unplug the device and reboot it. Congrats you have removed the ads and ota updates from the Amazon Blu R1 HD. Bounce you have also enabled bootloader unlocking if you want it.
NOTE: ads may still be on the lock screen after this process if so please factory reset the device to remove those ads that are saved in userdata. or if you follow Bootloader unlock Method 2 steps 1-8 your userdata will get wiped in the process