Here are all the Recovery.img's I know of for the MID7127.
Stock = Coby-Stock.img
CWM V4 = Coby-CWM-V4.img
CWM V5 = Coby-CWM-V5.img
KTZ = Coby-KTZ.rfs
All these can be tested in Fastboot mode:
fastboot boot "Recovery.img"
All these can be flashed in Fastboot mode:
"Recovery.img" = what ever the name of the .img file is.
fastboot flash recovery "Recovery.img"
(KTZ Recovery is NOT a .img, it's a .rfs)
Once you've flashed a new recovery, MAKE A BACKUP, IT WILL SAVE YOUR ASS!