UPDATE 5-Sudan signs ceasefire with Darfur JEM rebels

* Sudan, rebels sign temporary ceasefire, framework deal

* Deal to "heal the war in Darfur", says Sudan president

* President lifts death sentences on rebels (Adds government quote)

By Andrew Heavens

KHARTOUM, Feb 20 (Reuters) - Sudan agreed a ceasefire with Darfur's most powerful rebel group on Saturday as part of an agreement to "heal" the war in the western region, Sudanese President Omar Hassan al-Bashir said.

The rebel Justice and Equality Movement (JEM) said the framework agreement reached in the Chadian capital N'Djamena was not a final peace deal but set out the terms for negotiations that could still fail if it saw signs of bad faith from Khartoum.

Bashir said he would cancel death sentences handed out to JEM prisoners and free 30 percent of them immediately. More than 100 men were sentenced to death by hanging after being found guilty of taking part in a JEM attack on Khartoum in 2008.

Bashir told state television: "Today we signed an agreement between the government and JEM in N'Djamena, and in N'Djamena we heal the war in Darfur."

Khartoum has agreed to a series of ceasefires during the seven-year conflict, but some have fallen apart days after their signing, and distrust between the warring parties remains deep.