plus.google.com/+Chainfire/posts/LCFC5d7CraL

2016.05.11 - v0.33 - BETA - RELEASE NOTES
- Add support for backing up to and restoring from ADB, through USB or Wi-Fi (special ZIP format)
- Completely reworked progress code, more info is shown in more places now (current file, speed, progress)
- Improved back key handling
- Improved app startup performance
- If sdcard is adopted, reflect that in location display name
- Fix adopted SD card sometimes not showing up in mixed partition mode
- Attempt to identify external sdcard (rather than calling it USB)
- Adjust storage location display order
- Add warning when using adopted storage
- Rewrote file creation routines to cope better with adopted storages
- Fix reboot card popup title
- Refactor shell commands as root
- Change install location to internal-only
- Fix backup of internal storage not skipping backups in some cases
- Adjust ZIP parser so it can cope with Samsung FOTA ZIPs
- Added warning for Huawei users about brickability
- Add OEM partition to TWRP emergency restore
- Fix backup/restore per-file progress freezing
- Archives: Add suppport for Huawei's UPDATE.APP format
- OTA: Add detection for Samsung
- OTA: Add detection for Huawei
- OTA: Add detection for HTC
- OTA: Add detection for Letv
- OTA: Add multi-zip-file capability
- Partitions: Add various Tegra-specific partitions
- Partitions: Add various Mtk64-specific partitions
- Partitions: Add various Huawei-specific partitions
- Partitions: Add various Pixel-C-specific partitions
- Partitions: Add generic Factory Reset Protection partition
- Partitions: Add support for eMMC boot and general purpose partitions
- Partitions: Attempt r/w unlock before writing
- EverRoot: Updated embedded SuperSU to v2.72 BETA
- EverRoot: Use LESSLOGGING mode, reduces SuperSU output

This release does not have a Play Store Description, so we grabbed one from version 0.73:

FlashFire is the most advanced on-device firmware flasher available for rooted Android devices. It can flash full firmware packages from various manufacturers, as well as apply over-the-air (OTA) and ZIP updates - all while maintaining root, and without using a custom recovery. It also offers full device backup and restore functionalities in several formats. Relevant files can be stored on internal storage, SD cards, USB connected storage, or can even be streamed directly to and from your computer using USB or Wi-Fi.

FlashFire is the spiritual successor to the Mobile ODIN app, which was a similar solution (using completely different methods under the hood) exclusively for Samsung devices on older Android versions.

FlashFire is an extremely powerful application, it should be used with caution. Data loss, soft-bricks, and even hard-bricks are possible if used incorrectly. Unless you are an expert user, consult FlashFire's website and the XDA discussion thread before doing anything potentially destructive.

Note: currently all functionality is unlocked without purchasing Pro. This may change in the future!

Website: flashfire.chainfire.eu/

Changelogs: forum.xda-developers.com/showpost.php?p=59962696&postcount=8

XDA discussion thread: forum.xda-developers.com/general/paid-software/flashfire-t3075433