i have a valid backup that you can flash with flashtool the versione is Leagoo_Lead1_SM619B_0.12.1_S0105 date jeanuary 2015 i made a version with root, modified boot and cwm recovery ( i made them again , because with files of first post, my display no good, flikering so much) and new ebr1 and ebr2 for have 5,5gb gb of data memory for app, (about 650mb for internal sd) and fix sd for kitekat I did not do anything by myself, so I thank all the authors of the various post where I found useful news and file. thanks to linuxovios for new ebr here the file Leagoo Lead 1 VERSION SM619B_0.12.1_S0105 original boot recovery and ebr https://mega.co.nz/#!Zp1UhaQR!-ICmBG...MAXE7lXovxU6D8 unsecure boot, cwm recovery, ebr1, ebr2 for 5.5gb https://mega.co.nz/#!AkNwlApL!ch-2rp...8DDtO6Mr1ex--g unsecure boot, cwm recovery, ebr1,ebr2 for 3gbgb https://mega.co.nz/#!BkUUzKqK!nyUo4t...GbTyWctde_M_CQ firmware full, rooted, 5.5gb x data, fix sdcard https://mega.co.nz/#!chkDAB5Y!MQ1HNE...lQFJ5YgqulfA8g Original firmware no root, 2gb x data https://mega.co.nz/#!kw8mxDSQ!g8TdT5...FNS7P029rk3_yw YOU MADE IT AT OWN RISK!!! I CANNOT HAVE ANY RESPONSABILITY IF YOU PHONE WILL HAVE A BRICK!!! REMEMBER THAT YOU DONT MUST FLASH PRELOADER, MBR AND DSP_BLAl registrarte dejarás de ver este anuncio. Anímate, es gratis, rápido y sin PUBLICIDAD!