If you have micromax bolt a069 and in that problem like hang on logo, pattern unlock, restarting problem then you can using this tutorial for that solution and if your device dead then you can use this tutorial but must to be in software related issue if your device hardware issue then you can't solve above mention issue so please care fully use this tutorial i suggest before use this tutorial first carefully read this tutorial after following this if software issue and not solve your problem then write down comment on below comment box i will soon good reply
This flash file tested by me without any error working well, you can use this flash file when your device hang on logo problem, restarting problem, security lock problem, password lock problem, pattern lock problem etc software related problem and you can use this tutorial without any box and this is free for all who know about software in mobile, impotent for flashing first must check your micro usb cable if not good then you can't flash it so check micro usb cable second check your device battery that is impotent for flashing if your device battery low so stop your device between flash so this is impotent for flash, before you flash save your data like contact, photos, videos etc because this is factory flash file so you can't save after full flash so must remember all are impotent notes.
1. First download tested firmware or flash tool from above link (if link not working just write down your comment on below comment box)
7. Wait until driver install, if driver installed in your computer or laptop then downloading automatically start into device