The original 'brick-fix tool' and 'enhanced mtd hack' has proven pretty useful for those with R0 cameras that had been bricked by doing a firmware update.
It's been even more useful to deal with the fallout from the 'Hikvision backdoor' disclosure where so many people are finding their cameras are being messed with from the internet, mischievously or maliciously, and need to update to safer firmware.
However - the rather techy original method to make the changes, and probably my not-very-clear instructions have been a challenge for some people.
* And I only just noticed this - my original...