Legal analysis: You can also appeal to the court after signing the letter of understanding. Signing a letter of understanding does not mean the loss of litigation rights. The letter of understanding can only apply for a mitigated punishment. If the victim and his legal representative are not satisfied, they have the right to request the people's procuratorate to lodge a protest. The letter of understanding is only a sentencing circumstance. Sentencing will be determined by comprehensive consideration of various factors, and it is recommended to entrust a lawyer as soon as possible. Lawyers can comprehensively consider various favorable factors and strive for a lighter, mitigated punishment or even suspended sentence for criminal suspects.
Legal basis: Article 290 of the Criminal Procedure Law of People's Republic of China (PRC) Validity of a settlement agreement The public security organ may make suggestions to the people's procuratorate for leniency in cases where a settlement agreement is reached. The people's procuratorate may put forward suggestions for lenient punishment to the people's court; If the circumstances of the crime are minor and there is no need to be sentenced to punishment, a decision not to prosecute may be made. The people's court may punish the defendant lightly according to law.